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->Privoxy 3.0.9 User Manual</TH
-></TR
-><TR
-><TD
-WIDTH="10%"
-ALIGN="left"
-VALIGN="bottom"
-><A
-HREF="configuration.html"
-ACCESSKEY="P"
->Prev</A
-></TD
-><TD
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-ALIGN="center"
-VALIGN="bottom"
-></TD
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-ALIGN="right"
-VALIGN="bottom"
-><A
-HREF="actions-file.html"
-ACCESSKEY="N"
->Next</A
-></TD
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-><HR
-ALIGN="LEFT"
-WIDTH="100%"></DIV
-><DIV
-CLASS="SECT1"
-><H1
-CLASS="SECT1"
-><A
-NAME="CONFIG"
->7. The Main Configuration File</A
-></H1
-><P
-> Again, the main configuration file is named <TT
-CLASS="FILENAME"
->config</TT
-> on
- Linux/Unix/BSD and OS/2, and <TT
-CLASS="FILENAME"
->config.txt</TT
-> on Windows.
- Configuration lines consist of an initial keyword followed by a list of
- values, all separated by whitespace (any number of spaces or tabs). For
- example:</P
-><P
-> <TT
-CLASS="LITERAL"
-> <P
-CLASS="LITERALLAYOUT"
-> <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->confdir /etc/privoxy</I
-></SPAN
-></P
->
- </TT
-> </P
-><P
-> Assigns the value <TT
-CLASS="LITERAL"
->/etc/privoxy</TT
-> to the option
- <TT
-CLASS="LITERAL"
->confdir</TT
-> and thus indicates that the configuration
- directory is named <SPAN
-CLASS="QUOTE"
->"/etc/privoxy/"</SPAN
->.</P
-><P
-> All options in the config file except for <TT
-CLASS="LITERAL"
->confdir</TT
-> and
- <TT
-CLASS="LITERAL"
->logdir</TT
-> are optional. Watch out in the below description
- for what happens if you leave them unset.</P
-><P
-> The main config file controls all aspects of <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->'s
- operation that are not location dependent (i.e. they apply universally, no matter
- where you may be surfing).</P
-><DIV
-CLASS="SECT2"
-><H2
-CLASS="SECT2"
-><A
-NAME="LOCAL-SET-UP"
->7.1. Local Set-up Documentation</A
-></H2
-><P
-> If you intend to operate <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> for more users
- than just yourself, it might be a good idea to let them know how to reach
- you, what you block and why you do that, your policies, etc.
- </P
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="USER-MANUAL"
->7.1.1. user-manual</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Location of the <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> User Manual.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->A fully qualified URI</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Unset</I
-></SPAN
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> <A
-HREF="http://www.privoxy.org/user-manual/"
-TARGET="_top"
->http://www.privoxy.org/<TT
-CLASS="REPLACEABLE"
-><I
->version</I
-></TT
->/user-manual/</A
->
- will be used, where <TT
-CLASS="REPLACEABLE"
-><I
->version</I
-></TT
-> is the <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> version.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> The User Manual URI is the single best source of information on
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->, and is used for help links from some
- of the internal CGI pages. The manual itself is normally packaged with the
- binary distributions, so you probably want to set this to a locally
- installed copy.
- </P
-><P
-> Examples:
- </P
-><P
-> The best all purpose solution is simply to put the full local
- <TT
-CLASS="LITERAL"
->PATH</TT
-> to where the <I
-CLASS="CITETITLE"
->User Manual</I
-> is
- located:
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> user-manual /usr/share/doc/privoxy/user-manual</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><P
-> The User Manual is then available to anyone with access to
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->, by following the built-in URL:
- <TT
-CLASS="LITERAL"
->http://config.privoxy.org/user-manual/</TT
->
- (or the shortcut: <TT
-CLASS="LITERAL"
->http://p.p/user-manual/</TT
->).
- </P
-><P
-> If the documentation is not on the local system, it can be accessed
- from a remote server, as:
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> user-manual http://example.com/privoxy/user-manual/</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><DIV
-CLASS="WARNING"
-><P
-></P
-><TABLE
-CLASS="WARNING"
-BORDER="1"
-WIDTH="90%"
-><TR
-><TD
-ALIGN="CENTER"
-><B
->Warning</B
-></TD
-></TR
-><TR
-><TD
-ALIGN="LEFT"
-><P
-> If set, this option should be <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->the first option in the config
- file</I
-></SPAN
->, because it is used while the config file is being read
- on start-up.
- </P
-></TD
-></TR
-></TABLE
-></DIV
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="TRUST-INFO-URL"
->7.1.2. trust-info-url</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> A URL to be displayed in the error page that users will see if access to an untrusted page is denied.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->URL</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
->Two example URLs are provided</P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> No links are displayed on the "untrusted" error page.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> The value of this option only matters if the experimental trust mechanism has been
- activated. (See <A
-HREF="config.html#TRUSTFILE"
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->trustfile</I
-></SPAN
-></A
-> below.)
- </P
-><P
-> If you use the trust mechanism, it is a good idea to write up some on-line
- documentation about your trust policy and to specify the URL(s) here.
- Use multiple times for multiple URLs.
- </P
-><P
-> The URL(s) should be added to the trustfile as well, so users don't end up
- locked out from the information on why they were locked out in the first place!
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="ADMIN-ADDRESS"
->7.1.3. admin-address</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> An email address to reach the <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> administrator.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->Email address</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Unset</I
-></SPAN
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> No email address is displayed on error pages and the CGI user interface.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> If both <TT
-CLASS="LITERAL"
->admin-address</TT
-> and <TT
-CLASS="LITERAL"
->proxy-info-url</TT
->
- are unset, the whole "Local Privoxy Support" box on all generated pages will
- not be shown.
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="PROXY-INFO-URL"
->7.1.4. proxy-info-url</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> A URL to documentation about the local <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> setup,
- configuration or policies.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->URL</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Unset</I
-></SPAN
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> No link to local documentation is displayed on error pages and the CGI user interface.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> If both <TT
-CLASS="LITERAL"
->admin-address</TT
-> and <TT
-CLASS="LITERAL"
->proxy-info-url</TT
->
- are unset, the whole "Local Privoxy Support" box on all generated pages will
- not be shown.
- </P
-><P
-> This URL shouldn't be blocked ;-)
- </P
-></DD
-></DL
-></DIV
-></DIV
-></DIV
-><DIV
-CLASS="SECT2"
-><H2
-CLASS="SECT2"
-><A
-NAME="CONF-LOG-LOC"
->7.2. Configuration and Log File Locations</A
-></H2
-><P
-> <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> can (and normally does) use a number of
- other files for additional configuration, help and logging.
- This section of the configuration file tells <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->
- where to find those other files. </P
-><P
-> The user running <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->, must have read
- permission for all configuration files, and write permission to any files
- that would be modified, such as log files and actions files.</P
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="CONFDIR"
->7.2.1. confdir</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
->The directory where the other configuration files are located.</P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->Path name</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
->/etc/privoxy (Unix) <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->or</I
-></SPAN
-> <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> installation dir (Windows) </P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Mandatory</I
-></SPAN
-></P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> No trailing <SPAN
-CLASS="QUOTE"
->"<TT
-CLASS="LITERAL"
->/</TT
->"</SPAN
->, please.
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="TEMPLDIR"
->7.2.2. templdir</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
->An alternative directory where the templates are loaded from.</P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->Path name</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
->unset</P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
->The templates are assumed to be located in confdir/template.</P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> <SPAN
-CLASS="APPLICATION"
->Privoxy's</SPAN
-> original templates are usually
- overwritten with each update. Use this option to relocate customized
- templates that should be kept. As template variables might change
- between updates, you shouldn't expect templates to work with
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> releases other than the one
- they were part of, though.
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="LOGDIR"
->7.2.3. logdir</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> The directory where all logging takes place
- (i.e. where <TT
-CLASS="FILENAME"
->logfile</TT
-> and
- <TT
-CLASS="FILENAME"
->jarfile</TT
-> are located).
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->Path name</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
->/var/log/privoxy (Unix) <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->or</I
-></SPAN
-> <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> installation dir (Windows) </P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Mandatory</I
-></SPAN
-></P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> No trailing <SPAN
-CLASS="QUOTE"
->"<TT
-CLASS="LITERAL"
->/</TT
->"</SPAN
->, please.
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="ACTIONSFILE"
->7.2.4. actionsfile</A
-></H4
-><A
-NAME="DEFAULT.ACTION"
-></A
-><A
-NAME="STANDARD.ACTION"
-></A
-><A
-NAME="USER.ACTION"
-></A
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> The <A
-HREF="actions-file.html"
->actions file(s)</A
-> to use
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->Complete file name, relative to <TT
-CLASS="LITERAL"
->confdir</TT
-></P
-></DD
-><DT
->Default values:</DT
-><DD
-><P
-></P
-><TABLE
-BORDER="0"
-><TBODY
-><TR
-><TD
-> <P
-CLASS="LITERALLAYOUT"
-> standard.action # Internal purposes, no editing recommended</P
->
- </TD
-></TR
-><TR
-><TD
-> <P
-CLASS="LITERALLAYOUT"
-> default.action # Main actions file</P
->
- </TD
-></TR
-><TR
-><TD
-> <P
-CLASS="LITERALLAYOUT"
-> user.action # User customizations</P
->
- </TD
-></TR
-></TBODY
-></TABLE
-><P
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> No actions are taken at all. More or less neutral proxying.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> Multiple <TT
-CLASS="LITERAL"
->actionsfile</TT
-> lines are permitted, and are in fact recommended!
- </P
-><P
->
- The default values include <TT
-CLASS="FILENAME"
->standard.action</TT
->, which is used
- for internal purposes and should be loaded, <TT
-CLASS="FILENAME"
->default.action</TT
->,
- which is the <SPAN
-CLASS="QUOTE"
->"main"</SPAN
-> actions file maintained by the developers, and
- <TT
-CLASS="FILENAME"
->user.action</TT
->, where you can make your personal additions.
- </P
-><P
->
- Actions files contain all the per site and per URL configuration for
- ad blocking, cookie management, privacy considerations, etc.
- There is no point in using <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> without at
- least one actions file.
- </P
-><P
-> Note that since Privoxy 3.0.7, the complete filename, including the <SPAN
-CLASS="QUOTE"
->".action"</SPAN
->
- extension has to be specified. The syntax change was necessary to be consistent
- with the other file options and to allow previously forbidden characters.
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="FILTERFILE"
->7.2.5. filterfile</A
-></H4
-><A
-NAME="DEFAULT.FILTER"
-></A
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> The <A
-HREF="filter-file.html"
->filter file(s)</A
-> to use
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->File name, relative to <TT
-CLASS="LITERAL"
->confdir</TT
-></P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
->default.filter (Unix) <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->or</I
-></SPAN
-> default.filter.txt (Windows)</P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> No textual content filtering takes place, i.e. all
- <TT
-CLASS="LITERAL"
->+<A
-HREF="actions-file.html#FILTER"
->filter</A
->{<TT
-CLASS="REPLACEABLE"
-><I
->name</I
-></TT
->}</TT
->
- actions in the actions files are turned neutral.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> Multiple <TT
-CLASS="LITERAL"
->filterfile</TT
-> lines are permitted.
- </P
-><P
-> The <A
-HREF="filter-file.html"
->filter files</A
-> contain content modification
- rules that use <A
-HREF="appendix.html#REGEX"
->regular expressions</A
->. These rules permit
- powerful changes on the content of Web pages, and optionally the headers
- as well, e.g., you could try to disable your favorite JavaScript annoyances,
- re-write the actual displayed text, or just have some fun
- playing buzzword bingo with web pages.
- </P
-><P
-> The
- <TT
-CLASS="LITERAL"
->+<A
-HREF="actions-file.html#FILTER"
->filter</A
->{<TT
-CLASS="REPLACEABLE"
-><I
->name</I
-></TT
->}</TT
->
- actions rely on the relevant filter (<TT
-CLASS="REPLACEABLE"
-><I
->name</I
-></TT
->)
- to be defined in a filter file!
- </P
-><P
-> A pre-defined filter file called <TT
-CLASS="FILENAME"
->default.filter</TT
-> that contains
- a number of useful filters for common problems is included in the distribution.
- See the section on the <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FILTER"
->filter</A
-></TT
->
- action for a list.
- </P
-><P
-> It is recommended to place any locally adapted filters into a separate
- file, such as <TT
-CLASS="FILENAME"
->user.filter</TT
->.
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="LOGFILE"
->7.2.6. logfile</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> The log file to use
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->File name, relative to <TT
-CLASS="LITERAL"
->logdir</TT
-></P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Unset (commented out)</I
-></SPAN
->. When activated: logfile (Unix) <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->or</I
-></SPAN
-> privoxy.log (Windows).</P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> No logfile is written.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> The logfile is where all logging and error messages are written. The level
- of detail and number of messages are set with the <TT
-CLASS="LITERAL"
->debug</TT
->
- option (see below). The logfile can be useful for tracking down a problem with
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> (e.g., it's not blocking an ad you
- think it should block) and it can help you to monitor what your browser
- is doing.
- </P
-><P
-> Depending on the debug options below, the logfile may be a privacy risk
- if third parties can get access to it. As most users will never look
- at it, <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> 3.0.7 and later only log fatal
- errors by default.
- </P
-><P
-> For most troubleshooting purposes, you will have to change that,
- please refer to the debugging section for details.
- </P
-><P
-> Your logfile will grow indefinitely, and you will probably want to
- periodically remove it. On Unix systems, you can do this with a cron job
- (see <SPAN
-CLASS="QUOTE"
->"man cron"</SPAN
->). For Red Hat based Linux distributions, a
- <B
-CLASS="COMMAND"
->logrotate</B
-> script has been included.
- </P
-><P
-> Any log files must be writable by whatever user <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->
- is being run as (on Unix, default user id is <SPAN
-CLASS="QUOTE"
->"privoxy"</SPAN
->).
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="JARFILE"
->7.2.7. jarfile</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> The file to store intercepted cookies in
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->File name, relative to <TT
-CLASS="LITERAL"
->logdir</TT
-></P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Unset (commented out)</I
-></SPAN
->. When activated: jarfile (Unix) <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->or</I
-></SPAN
-> privoxy.jar (Windows).</P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> Intercepted cookies are not stored in a dedicated log file.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> The jarfile may grow to ridiculous sizes over time.
- </P
-><P
-> If debug 8 (show header parsing) is enabled, cookies are
- also written to the logfile with the rest of the headers.
- Therefore this option isn't very useful and may be removed
- in future releases. Please report to the developers if you
- are still using it.
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="TRUSTFILE"
->7.2.8. trustfile</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> The name of the trust file to use
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->File name, relative to <TT
-CLASS="LITERAL"
->confdir</TT
-></P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Unset (commented out)</I
-></SPAN
->. When activated: trust (Unix) <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->or</I
-></SPAN
-> trust.txt (Windows)</P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> The entire trust mechanism is disabled.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> The trust mechanism is an experimental feature for building white-lists and should
- be used with care. It is <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->NOT</I
-></SPAN
-> recommended for the casual user.
- </P
-><P
-> If you specify a trust file, <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> will only allow
- access to sites that are specified in the trustfile. Sites can be listed
- in one of two ways:
- </P
-><P
-> Prepending a <TT
-CLASS="LITERAL"
->~</TT
-> character limits access to this site
- only (and any sub-paths within this site), e.g.
- <TT
-CLASS="LITERAL"
->~www.example.com</TT
-> allows access to
- <TT
-CLASS="LITERAL"
->~www.example.com/features/news.html</TT
->, etc.
- </P
-><P
-> Or, you can designate sites as <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->trusted referrers</I
-></SPAN
->, by
- prepending the name with a <TT
-CLASS="LITERAL"
->+</TT
-> character. The effect is that
- access to untrusted sites will be granted -- but only if a link from this
- trusted referrer was used to get there. The link target will then be added
- to the <SPAN
-CLASS="QUOTE"
->"trustfile"</SPAN
-> so that future, direct accesses will be
- granted. Sites added via this mechanism do not become trusted referrers
- themselves (i.e. they are added with a <TT
-CLASS="LITERAL"
->~</TT
-> designation).
- There is a limit of 512 such entries, after which new entries will not be
- made.
- </P
-><P
-> If you use the <TT
-CLASS="LITERAL"
->+</TT
-> operator in the trust file, it may grow
- considerably over time.
- </P
-><P
-> It is recommended that <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> be compiled with
- the <TT
-CLASS="LITERAL"
->--disable-force</TT
->, <TT
-CLASS="LITERAL"
->--disable-toggle</TT
-> and
- <TT
-CLASS="LITERAL"
-> --disable-editor</TT
-> options, if this feature is to be
- used.
- </P
-><P
-> Possible applications include limiting Internet access for children.
- </P
-></DD
-></DL
-></DIV
-></DIV
-></DIV
-><DIV
-CLASS="SECT2"
-><H2
-CLASS="SECT2"
-><A
-NAME="DEBUGGING"
->7.3. Debugging</A
-></H2
-><P
-> These options are mainly useful when tracing a problem.
- Note that you might also want to invoke
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> with the <TT
-CLASS="LITERAL"
->--no-daemon</TT
->
- command line option when debugging.
- </P
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="DEBUG"
->7.3.1. debug</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Key values that determine what information gets logged.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->Integer values</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
->0 (i.e.: only fatal errors (that cause Privoxy to exit) are logged)</P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> Default value is used (see above).
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> The available debug levels are:
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="PROGRAMLISTING"
-> debug 1 # log each request destination (and the crunch reason if <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> intercepted the request)
- debug 2 # show each connection status
- debug 4 # show I/O status
- debug 8 # show header parsing
- debug 16 # log all data written to the network into the logfile
- debug 32 # debug force feature
- debug 64 # debug regular expression filters
- debug 128 # debug redirects
- debug 256 # debug GIF de-animation
- debug 512 # Common Log Format
- debug 1024 # Unused
- debug 2048 # CGI user interface
- debug 4096 # Startup banner and warnings.
- debug 8192 # Non-fatal errors</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><P
-> To select multiple debug levels, you can either add them or use
- multiple <TT
-CLASS="LITERAL"
->debug</TT
-> lines.
- </P
-><P
-> A debug level of 1 is informative because it will show you each request
- as it happens. <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->1, 4096 and 8192 are recommended</I
-></SPAN
->
- so that you will notice when things go wrong. The other levels are
- probably only of interest if you are hunting down a specific problem.
- They can produce a hell of an output (especially 16).
-
- </P
-><P
-> <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> used to ship with the debug levels recommended above enabled by
- default, but due to privacy concerns 3.0.7 and later are configured to
- only log fatal errors.
- </P
-><P
-> If you are used to the more verbose settings, simply enable the debug lines
- below again.
- </P
-><P
-> If you want to use pure CLF (Common Log Format), you should set <SPAN
-CLASS="QUOTE"
->"debug
- 512"</SPAN
-> <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->ONLY</I
-></SPAN
-> and not enable anything else.
- </P
-><P
-> <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> has a hard-coded limit for the
- length of log messages. If it's reached, messages are logged truncated
- and marked with <SPAN
-CLASS="QUOTE"
->"... [too long, truncated]"</SPAN
->.
- </P
-><P
-> Please don't file any support requests without trying to reproduce
- the problem with increased debug level first. Once you read the log
- messages, you may even be able to solve the problem on your own.
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="SINGLE-THREADED"
->7.3.2. single-threaded</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Whether to run only one server thread.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->None</I
-></SPAN
-></P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Unset</I
-></SPAN
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> Multi-threaded (or, where unavailable: forked) operation, i.e. the ability to
- serve multiple requests simultaneously.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> This option is only there for debugging purposes.
- <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->It will drastically reduce performance.</I
-></SPAN
->
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="HOSTNAME"
->7.3.3. hostname</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> The hostname shown on the CGI pages.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->Text</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Unset</I
-></SPAN
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> The hostname provided by the operating system is used.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> On some misconfigured systems resolving the hostname fails or
- takes too much time and slows Privoxy down. Setting a fixed hostname
- works around the problem.
- </P
-><P
-> In other circumstances it might be desirable to show a hostname
- other than the one returned by the operating system. For example
- if the system has several different hostnames and you don't want
- to use the first one.
- </P
-><P
-> Note that Privoxy does not validate the specified hostname value.
- </P
-></DD
-></DL
-></DIV
-></DIV
-></DIV
-><DIV
-CLASS="SECT2"
-><H2
-CLASS="SECT2"
-><A
-NAME="ACCESS-CONTROL"
->7.4. Access Control and Security</A
-></H2
-><P
-> This section of the config file controls the security-relevant aspects
- of <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->'s configuration.
- </P
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="LISTEN-ADDRESS"
->7.4.1. listen-address</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> The IP address and TCP port on which <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> will
- listen for client requests.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->[<TT
-CLASS="REPLACEABLE"
-><I
->IP-Address</I
-></TT
->]:<TT
-CLASS="REPLACEABLE"
-><I
->Port</I
-></TT
-></P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
->127.0.0.1:8118</P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> Bind to 127.0.0.1 (localhost), port 8118. This is suitable and recommended for
- home users who run <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> on the same machine as
- their browser.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> You will need to configure your browser(s) to this proxy address and port.
- </P
-><P
-> If you already have another service running on port 8118, or if you want to
- serve requests from other machines (e.g. on your local network) as well, you
- will need to override the default.
- </P
-><P
-> If you leave out the IP address, <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> will
- bind to all interfaces (addresses) on your machine and may become reachable
- from the Internet. In that case, consider using <A
-HREF="config.html#ACLS"
->access control lists</A
-> (ACL's, see below), and/or
- a firewall.
- </P
-><P
-> If you open <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> to untrusted users, you will
- also want to make sure that the following actions are disabled: <TT
-CLASS="LITERAL"
-><A
-HREF="config.html#ENABLE-EDIT-ACTIONS"
->enable-edit-actions</A
-></TT
-> and
- <TT
-CLASS="LITERAL"
-><A
-HREF="config.html#ENABLE-REMOTE-TOGGLE"
->enable-remote-toggle</A
-></TT
->
- </P
-></DD
-><DT
->Example:</DT
-><DD
-><P
-> Suppose you are running <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> on
- a machine which has the address 192.168.0.1 on your local private network
- (192.168.0.0) and has another outside connection with a different address.
- You want it to serve requests from inside only:
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="PROGRAMLISTING"
-> listen-address 192.168.0.1:8118</PRE
-></TD
-></TR
-></TABLE
->
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="TOGGLE"
->7.4.2. toggle</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Initial state of "toggle" status
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->1 or 0</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
->1</P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> Act as if toggled on
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> If set to 0, <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> will start in
- <SPAN
-CLASS="QUOTE"
->"toggled off"</SPAN
-> mode, i.e. mostly behave like a normal,
- content-neutral proxy with both ad blocking and content filtering
- disabled. See <TT
-CLASS="LITERAL"
->enable-remote-toggle</TT
-> below.
- </P
-><P
-> The windows version will only display the toggle icon in the system tray
- if this option is present.
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="ENABLE-REMOTE-TOGGLE"
->7.4.3. enable-remote-toggle</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Whether or not the <A
-HREF="http://config.privoxy.org/toggle"
-TARGET="_top"
->web-based toggle
- feature</A
-> may be used
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->0 or 1</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
->0</P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> The web-based toggle feature is disabled.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> When toggled off, <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> mostly acts like a normal,
- content-neutral proxy, i.e. doesn't block ads or filter content.
- </P
-><P
-> Access to the toggle feature can <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->not</I
-></SPAN
-> be
- controlled separately by <SPAN
-CLASS="QUOTE"
->"ACLs"</SPAN
-> or HTTP authentication,
- so that everybody who can access <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> (see
- <SPAN
-CLASS="QUOTE"
->"ACLs"</SPAN
-> and <TT
-CLASS="LITERAL"
->listen-address</TT
-> above) can
- toggle it for all users. So this option is <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->not recommended</I
-></SPAN
->
- for multi-user environments with untrusted users.
- </P
-><P
-> Note that malicious client side code (e.g Java) is also
- capable of using this option.
- </P
-><P
-> As a lot of <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> users don't read
- documentation, this feature is disabled by default.
- </P
-><P
-> Note that you must have compiled <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> with
- support for this feature, otherwise this option has no effect.
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="ENABLE-REMOTE-HTTP-TOGGLE"
->7.4.4. enable-remote-http-toggle</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Whether or not Privoxy recognizes special HTTP headers to change its behaviour.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->0 or 1</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
->0</P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> Privoxy ignores special HTTP headers.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> When toggled on, the client can change <SPAN
-CLASS="APPLICATION"
->Privoxy's</SPAN
->
- behaviour by setting special HTTP headers. Currently the only supported
- special header is <SPAN
-CLASS="QUOTE"
->"X-Filter: No"</SPAN
->, to disable filtering for
- the ongoing request, even if it is enabled in one of the action files.
- </P
-><P
-> This feature is disabled by default. If you are using
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> in a environment with trusted clients,
- you may enable this feature at your discretion. Note that malicious client
- side code (e.g Java) is also capable of using this feature.
- </P
-><P
-> This option will be removed in future releases as it has been obsoleted
- by the more general header taggers.
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="ENABLE-EDIT-ACTIONS"
->7.4.5. enable-edit-actions</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Whether or not the <A
-HREF="http://config.privoxy.org/show-status"
-TARGET="_top"
->web-based actions
- file editor</A
-> may be used
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->0 or 1</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
->0</P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> The web-based actions file editor is disabled.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> Access to the editor can <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->not</I
-></SPAN
-> be
- controlled separately by <SPAN
-CLASS="QUOTE"
->"ACLs"</SPAN
-> or HTTP authentication,
- so that everybody who can access <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> (see
- <SPAN
-CLASS="QUOTE"
->"ACLs"</SPAN
-> and <TT
-CLASS="LITERAL"
->listen-address</TT
-> above) can
- modify its configuration for all users.
- </P
-><P
-> This option is <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->not recommended</I
-></SPAN
-> for environments
- with untrusted users and as a lot of <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->
- users don't read documentation, this feature is disabled by default.
- </P
-><P
-> Note that malicious client side code (e.g Java) is also
- capable of using the actions editor and you shouldn't enable
- this options unless you understand the consequences and are
- sure your browser is configured correctly.
- </P
-><P
-> Note that you must have compiled <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> with
- support for this feature, otherwise this option has no effect.
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="ENFORCE-BLOCKS"
->7.4.6. enforce-blocks</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Whether the user is allowed to ignore blocks and can <SPAN
-CLASS="QUOTE"
->"go there anyway"</SPAN
->.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
-> <TT
-CLASS="REPLACEABLE"
-><I
->0 or 1</I
-></TT
->
- </P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->0</I
-></SPAN
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> Blocks are not enforced.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> is mainly used to block and filter
- requests as a service to the user, for example to block ads and other
- junk that clogs the pipes. <SPAN
-CLASS="APPLICATION"
->Privoxy's</SPAN
-> configuration
- isn't perfect and sometimes innocent pages are blocked. In this situation it
- makes sense to allow the user to enforce the request and have
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> ignore the block.
- </P
-><P
-> In the default configuration <SPAN
-CLASS="APPLICATION"
->Privoxy's</SPAN
->
- <SPAN
-CLASS="QUOTE"
->"Blocked"</SPAN
-> page contains a <SPAN
-CLASS="QUOTE"
->"go there anyway"</SPAN
->
- link to adds a special string (the force prefix) to the request URL.
- If that link is used, <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> will
- detect the force prefix, remove it again and let the request pass.
- </P
-><P
-> Of course <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> can also be used to enforce
- a network policy. In that case the user obviously should not be able to
- bypass any blocks, and that's what the <SPAN
-CLASS="QUOTE"
->"enforce-blocks"</SPAN
->
- option is for. If it's enabled, <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> hides
- the <SPAN
-CLASS="QUOTE"
->"go there anyway"</SPAN
-> link. If the user adds the force
- prefix by hand, it will not be accepted and the circumvention attempt
- is logged.
- </P
-></DD
-><DT
->Examples:</DT
-><DD
-><P
-> enforce-blocks 1
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="ACLS"
->7.4.7. ACLs: permit-access and deny-access</A
-></H4
-><A
-NAME="PERMIT-ACCESS"
-></A
-><A
-NAME="DENY-ACCESS"
-></A
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Who can access what.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
-> <TT
-CLASS="REPLACEABLE"
-><I
->src_addr</I
-></TT
->[/<TT
-CLASS="REPLACEABLE"
-><I
->src_masklen</I
-></TT
->]
- [<TT
-CLASS="REPLACEABLE"
-><I
->dst_addr</I
-></TT
->[/<TT
-CLASS="REPLACEABLE"
-><I
->dst_masklen</I
-></TT
->]]
- </P
-><P
-> Where <TT
-CLASS="REPLACEABLE"
-><I
->src_addr</I
-></TT
-> and
- <TT
-CLASS="REPLACEABLE"
-><I
->dst_addr</I
-></TT
-> are IP addresses in dotted decimal notation or valid
- DNS names, and <TT
-CLASS="REPLACEABLE"
-><I
->src_masklen</I
-></TT
-> and
- <TT
-CLASS="REPLACEABLE"
-><I
->dst_masklen</I
-></TT
-> are subnet masks in CIDR notation, i.e. integer
- values from 2 to 30 representing the length (in bits) of the network address. The masks and the whole
- destination part are optional.
- </P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Unset</I
-></SPAN
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> Don't restrict access further than implied by <TT
-CLASS="LITERAL"
->listen-address</TT
->
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> Access controls are included at the request of ISPs and systems
- administrators, and <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->are not usually needed by individual users</I
-></SPAN
->.
- For a typical home user, it will normally suffice to ensure that
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> only listens on the localhost
- (127.0.0.1) or internal (home) network address by means of the
- <A
-HREF="config.html#LISTEN-ADDRESS"
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->listen-address</I
-></SPAN
-></A
->
- option.
- </P
-><P
-> Please see the warnings in the FAQ that <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->
- is not intended to be a substitute for a firewall or to encourage anyone
- to defer addressing basic security weaknesses.
- </P
-><P
-> Multiple ACL lines are OK.
- If any ACLs are specified, <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> only talks
- to IP addresses that match at least one <TT
-CLASS="LITERAL"
->permit-access</TT
-> line
- and don't match any subsequent <TT
-CLASS="LITERAL"
->deny-access</TT
-> line. In other words, the
- last match wins, with the default being <TT
-CLASS="LITERAL"
->deny-access</TT
->.
- </P
-><P
-> If <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> is using a forwarder (see <TT
-CLASS="LITERAL"
->forward</TT
-> below)
- for a particular destination URL, the <TT
-CLASS="REPLACEABLE"
-><I
->dst_addr</I
-></TT
->
- that is examined is the address of the forwarder and <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->NOT</I
-></SPAN
-> the address
- of the ultimate target. This is necessary because it may be impossible for the local
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> to determine the IP address of the
- ultimate target (that's often what gateways are used for).
- </P
-><P
-> You should prefer using IP addresses over DNS names, because the address lookups take
- time. All DNS names must resolve! You can <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->not</I
-></SPAN
-> use domain patterns
- like <SPAN
-CLASS="QUOTE"
->"*.org"</SPAN
-> or partial domain names. If a DNS name resolves to multiple
- IP addresses, only the first one is used.
- </P
-><P
-> Denying access to particular sites by ACL may have undesired side effects
- if the site in question is hosted on a machine which also hosts other sites
- (most sites are).
- </P
-></DD
-><DT
->Examples:</DT
-><DD
-><P
-> Explicitly define the default behavior if no ACL and
- <TT
-CLASS="LITERAL"
->listen-address</TT
-> are set: <SPAN
-CLASS="QUOTE"
->"localhost"</SPAN
->
- is OK. The absence of a <TT
-CLASS="REPLACEABLE"
-><I
->dst_addr</I
-></TT
-> implies that
- <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->all</I
-></SPAN
-> destination addresses are OK:
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> permit-access localhost</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><P
-> Allow any host on the same class C subnet as www.privoxy.org access to
- nothing but www.example.com (or other domains hosted on the same system):
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> permit-access www.privoxy.org/24 www.example.com/32</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><P
-> Allow access from any host on the 26-bit subnet 192.168.45.64 to anywhere,
- with the exception that 192.168.45.73 may not access the IP address behind
- www.dirty-stuff.example.com:
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> permit-access 192.168.45.64/26
- deny-access 192.168.45.73 www.dirty-stuff.example.com</PRE
-></TD
-></TR
-></TABLE
->
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="BUFFER-LIMIT"
->7.4.8. buffer-limit</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Maximum size of the buffer for content filtering.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
->Size in Kbytes</P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
->4096</P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> Use a 4MB (4096 KB) limit.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> For content filtering, i.e. the <TT
-CLASS="LITERAL"
->+filter</TT
-> and
- <TT
-CLASS="LITERAL"
->+deanimate-gif</TT
-> actions, it is necessary that
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> buffers the entire document body.
- This can be potentially dangerous, since a server could just keep sending
- data indefinitely and wait for your RAM to exhaust -- with nasty consequences.
- Hence this option.
- </P
-><P
-> When a document buffer size reaches the <TT
-CLASS="LITERAL"
->buffer-limit</TT
->, it is
- flushed to the client unfiltered and no further attempt to
- filter the rest of the document is made. Remember that there may be multiple threads
- running, which might require up to <TT
-CLASS="LITERAL"
->buffer-limit</TT
-> Kbytes
- <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->each</I
-></SPAN
->, unless you have enabled <SPAN
-CLASS="QUOTE"
->"single-threaded"</SPAN
->
- above.
- </P
-></DD
-></DL
-></DIV
-></DIV
-></DIV
-><DIV
-CLASS="SECT2"
-><H2
-CLASS="SECT2"
-><A
-NAME="FORWARDING"
->7.5. Forwarding</A
-></H2
-><P
-> This feature allows routing of HTTP requests through a chain of
- multiple proxies.</P
-><P
-> Forwarding can be used to chain Privoxy with a caching proxy to speed
- up browsing. Using a parent proxy may also be necessary if the machine
- that <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> runs on has no direct Internet access.</P
-><P
-> Note that parent proxies can severely decrease your privacy level.
- For example a parent proxy could add your IP address to the request
- headers and if it's a caching proxy it may add the <SPAN
-CLASS="QUOTE"
->"Etag"</SPAN
->
- header to revalidation requests again, even though you configured Privoxy
- to remove it. It may also ignore Privoxy's header time randomization and use the
- original values which could be used by the server as cookie replacement
- to track your steps between visits.</P
-><P
-> Also specified here are SOCKS proxies. <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->
- supports the SOCKS 4 and SOCKS 4A protocols.</P
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="FORWARD"
->7.5.1. forward</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> To which parent HTTP proxy specific requests should be routed.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
-> <TT
-CLASS="REPLACEABLE"
-><I
->target_pattern</I
-></TT
->
- <TT
-CLASS="REPLACEABLE"
-><I
->http_parent</I
-></TT
->[:<TT
-CLASS="REPLACEABLE"
-><I
->port</I
-></TT
->]
- </P
-><P
-> where <TT
-CLASS="REPLACEABLE"
-><I
->target_pattern</I
-></TT
-> is a <A
-HREF="actions-file.html#AF-PATTERNS"
->URL pattern</A
->
- that specifies to which requests (i.e. URLs) this forward rule shall apply. Use <TT
-CLASS="LITERAL"
->/</TT
-> to
- denote <SPAN
-CLASS="QUOTE"
->"all URLs"</SPAN
->.
- <TT
-CLASS="REPLACEABLE"
-><I
->http_parent</I
-></TT
->[:<TT
-CLASS="REPLACEABLE"
-><I
->port</I
-></TT
->]
- is the DNS name or IP address of the parent HTTP proxy through which the requests should be forwarded,
- optionally followed by its listening port (default: 8080).
- Use a single dot (<TT
-CLASS="LITERAL"
->.</TT
->) to denote <SPAN
-CLASS="QUOTE"
->"no forwarding"</SPAN
->.
- </P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Unset</I
-></SPAN
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> Don't use parent HTTP proxies.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> If <TT
-CLASS="REPLACEABLE"
-><I
->http_parent</I
-></TT
-> is <SPAN
-CLASS="QUOTE"
->"."</SPAN
->, then requests are not
- forwarded to another HTTP proxy but are made directly to the web servers.
- </P
-><P
-> Multiple lines are OK, they are checked in sequence, and the last match wins.
- </P
-></DD
-><DT
->Examples:</DT
-><DD
-><P
-> Everything goes to an example parent proxy, except SSL on port 443 (which it doesn't handle):
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> forward / parent-proxy.example.org:8080
- forward :443 .</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><P
-> Everything goes to our example ISP's caching proxy, except for requests
- to that ISP's sites:
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> forward / caching-proxy.isp.example.net:8000
- forward .isp.example.net .</PRE
-></TD
-></TR
-></TABLE
->
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="SOCKS"
->7.5.2. forward-socks4, forward-socks4a and forward-socks5</A
-></H4
-><A
-NAME="FORWARD-SOCKS4"
-></A
-><A
-NAME="FORWARD-SOCKS4A"
-></A
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Through which SOCKS proxy (and optionally to which parent HTTP proxy) specific requests should be routed.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
-> <TT
-CLASS="REPLACEABLE"
-><I
->target_pattern</I
-></TT
->
- <TT
-CLASS="REPLACEABLE"
-><I
->socks_proxy</I
-></TT
->[:<TT
-CLASS="REPLACEABLE"
-><I
->port</I
-></TT
->]
- <TT
-CLASS="REPLACEABLE"
-><I
->http_parent</I
-></TT
->[:<TT
-CLASS="REPLACEABLE"
-><I
->port</I
-></TT
->]
- </P
-><P
-> where <TT
-CLASS="REPLACEABLE"
-><I
->target_pattern</I
-></TT
-> is a
- <A
-HREF="actions-file.html#AF-PATTERNS"
->URL pattern</A
-> that specifies to which
- requests (i.e. URLs) this forward rule shall apply. Use <TT
-CLASS="LITERAL"
->/</TT
-> to
- denote <SPAN
-CLASS="QUOTE"
->"all URLs"</SPAN
->. <TT
-CLASS="REPLACEABLE"
-><I
->http_parent</I
-></TT
->
- and <TT
-CLASS="REPLACEABLE"
-><I
->socks_proxy</I
-></TT
->
- are IP addresses in dotted decimal notation or valid DNS names
- (<TT
-CLASS="REPLACEABLE"
-><I
->http_parent</I
-></TT
->
- may be <SPAN
-CLASS="QUOTE"
->"."</SPAN
-> to denote <SPAN
-CLASS="QUOTE"
->"no HTTP forwarding"</SPAN
->), and the optional
- <TT
-CLASS="REPLACEABLE"
-><I
->port</I
-></TT
-> parameters are TCP ports,
- i.e. integer values from 1 to 65535
- </P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Unset</I
-></SPAN
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> Don't use SOCKS proxies.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> Multiple lines are OK, they are checked in sequence, and the last match wins.
- </P
-><P
-> The difference between <TT
-CLASS="LITERAL"
->forward-socks4</TT
-> and <TT
-CLASS="LITERAL"
->forward-socks4a</TT
->
- is that in the SOCKS 4A protocol, the DNS resolution of the target hostname happens on the SOCKS
- server, while in SOCKS 4 it happens locally.
- </P
-><P
-> With <TT
-CLASS="LITERAL"
->forward-socks5</TT
-> the DNS resolution will happen on the remote server as well.
- </P
-><P
-> If <TT
-CLASS="REPLACEABLE"
-><I
->http_parent</I
-></TT
-> is <SPAN
-CLASS="QUOTE"
->"."</SPAN
->, then requests are not
- forwarded to another HTTP proxy but are made (HTTP-wise) directly to the web servers, albeit through
- a SOCKS proxy.
- </P
-></DD
-><DT
->Examples:</DT
-><DD
-><P
-> From the company example.com, direct connections are made to all
- <SPAN
-CLASS="QUOTE"
->"internal"</SPAN
-> domains, but everything outbound goes through
- their ISP's proxy by way of example.com's corporate SOCKS 4A gateway to
- the Internet.
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> forward-socks4a / socks-gw.example.com:1080 www-cache.isp.example.net:8080
- forward .example.com .</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><P
-> A rule that uses a SOCKS 4 gateway for all destinations but no HTTP parent looks like this:
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> forward-socks4 / socks-gw.example.com:1080 .</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><P
-> To chain Privoxy and Tor, both running on the same system, you would use
- something like:
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> forward-socks4a / 127.0.0.1:9050 .</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><P
-> The public <SPAN
-CLASS="APPLICATION"
->Tor</SPAN
-> network can't be used to
- reach your local network, if you need to access local servers you
- therefore might want to make some exceptions:
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> forward 192.168.*.*/ .
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+"http://www.w3.org/TR/html4/loose.dtd">
+
+<html>
+<head>
+ <title>The Main Configuration File</title>
+ <meta name="GENERATOR" content=
+ "Modular DocBook HTML Stylesheet Version 1.79">
+ <link rel="HOME" title="Privoxy 3.0.25 User Manual" href="index.html">
+ <link rel="PREVIOUS" title="Privoxy Configuration" href=
+ "configuration.html">
+ <link rel="NEXT" title="Actions Files" href="actions-file.html">
+ <link rel="STYLESHEET" type="text/css" href="../p_doc.css">
+ <meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
+ <link rel="STYLESHEET" type="text/css" href="p_doc.css">
+</head>
+
+<body class="SECT1" bgcolor="#EEEEEE" text="#000000" link="#0000FF" vlink=
+"#840084" alink="#0000FF">
+ <div class="NAVHEADER">
+ <table summary="Header navigation table" width="100%" border="0"
+ cellpadding="0" cellspacing="0">
+ <tr>
+ <th colspan="3" align="center">Privoxy 3.0.25 User Manual</th>
+ </tr>
+
+ <tr>
+ <td width="10%" align="left" valign="bottom"><a href=
+ "configuration.html" accesskey="P">Prev</a></td>
+
+ <td width="80%" align="center" valign="bottom"></td>
+
+ <td width="10%" align="right" valign="bottom"><a href=
+ "actions-file.html" accesskey="N">Next</a></td>
+ </tr>
+ </table>
+ <hr align="left" width="100%">
+ </div>
+
+ <div class="SECT1">
+ <h1 class="SECT1"><a name="CONFIG" id="CONFIG">7. The Main Configuration
+ File</a></h1>
+
+ <p>By default, the main configuration file is named <tt class=
+ "FILENAME">config</tt>, with the exception of Windows, where it is named
+ <tt class="FILENAME">config.txt</tt>. Configuration lines consist of an
+ initial keyword followed by a list of values, all separated by whitespace
+ (any number of spaces or tabs). For example:</p>
+
+ <p class="LITERALLAYOUT"><tt class="LITERAL"> <span class=
+ "emphasis"><i class="EMPHASIS">confdir /etc/privoxy</i></span></tt></p>
+
+ <p>Assigns the value <tt class="LITERAL">/etc/privoxy</tt> to the option
+ <tt class="LITERAL">confdir</tt> and thus indicates that the
+ configuration directory is named <span class=
+ "QUOTE">"/etc/privoxy/"</span>.</p>
+
+ <p>All options in the config file except for <tt class=
+ "LITERAL">confdir</tt> and <tt class="LITERAL">logdir</tt> are optional.
+ Watch out in the below description for what happens if you leave them
+ unset.</p>
+
+ <p>The main config file controls all aspects of <span class=
+ "APPLICATION">Privoxy</span>'s operation that are not location dependent
+ (i.e. they apply universally, no matter where you may be surfing). Like
+ the filter and action files, the config file is a plain text file and can
+ be modified with a text editor like emacs, vim or notepad.exe.</p>
+
+ <div class="SECT2">
+ <h2 class="SECT2"><a name="LOCAL-SET-UP" id="LOCAL-SET-UP">7.1. Local
+ Set-up Documentation</a></h2>
+
+ <p>If you intend to operate <span class="APPLICATION">Privoxy</span>
+ for more users than just yourself, it might be a good idea to let them
+ know how to reach you, what you block and why you do that, your
+ policies, etc.</p>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="USER-MANUAL" id="USER-MANUAL">7.1.1.
+ user-manual</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Location of the <span class="APPLICATION">Privoxy</span>
+ User Manual.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>A fully qualified URI</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class=
+ "EMPHASIS">Unset</i></span></p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p><a href="http://www.privoxy.org/user-manual/" target=
+ "_top">http://www.privoxy.org/<tt class=
+ "REPLACEABLE"><i>version</i></tt>/user-manual/</a> will be
+ used, where <tt class="REPLACEABLE"><i>version</i></tt> is the
+ <span class="APPLICATION">Privoxy</span> version.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>The User Manual URI is the single best source of information
+ on <span class="APPLICATION">Privoxy</span>, and is used for
+ help links from some of the internal CGI pages. The manual
+ itself is normally packaged with the binary distributions, so
+ you probably want to set this to a locally installed copy.</p>
+
+ <p>Examples:</p>
+
+ <p>The best all purpose solution is simply to put the full
+ local <tt class="LITERAL">PATH</tt> to where the <i class=
+ "CITETITLE">User Manual</i> is located:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ user-manual /usr/share/doc/privoxy/user-manual
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>The User Manual is then available to anyone with access to
+ <span class="APPLICATION">Privoxy</span>, by following the
+ built-in URL: <tt class=
+ "LITERAL">http://config.privoxy.org/user-manual/</tt> (or the
+ shortcut: <tt class=
+ "LITERAL">http://p.p/user-manual/</tt>).</p>
+
+ <p>If the documentation is not on the local system, it can be
+ accessed from a remote server, as:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ user-manual http://example.com/privoxy/user-manual/
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <div class="WARNING">
+ <table class="WARNING" border="1" width="90%">
+ <tr>
+ <td align="center"><b>Warning</b></td>
+ </tr>
+
+ <tr>
+ <td align="left">
+ <p>If set, this option should be <span class=
+ "emphasis"><i class="EMPHASIS">the first option in the
+ config file</i></span>, because it is used while the
+ config file is being read on start-up.</p>
+ </td>
+ </tr>
+ </table>
+ </div>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="TRUST-INFO-URL" id="TRUST-INFO-URL">7.1.2.
+ trust-info-url</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>A URL to be displayed in the error page that users will see
+ if access to an untrusted page is denied.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>URL</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class=
+ "EMPHASIS">Unset</i></span></p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>No links are displayed on the "untrusted" error page.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>The value of this option only matters if the experimental
+ trust mechanism has been activated. (See <a href=
+ "config.html#TRUSTFILE"><span class="emphasis"><i class=
+ "EMPHASIS">trustfile</i></span></a> below.)</p>
+
+ <p>If you use the trust mechanism, it is a good idea to write
+ up some on-line documentation about your trust policy and to
+ specify the URL(s) here. Use multiple times for multiple
+ URLs.</p>
+
+ <p>The URL(s) should be added to the trustfile as well, so
+ users don't end up locked out from the information on why they
+ were locked out in the first place!</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="ADMIN-ADDRESS" id="ADMIN-ADDRESS">7.1.3.
+ admin-address</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>An email address to reach the <span class=
+ "APPLICATION">Privoxy</span> administrator.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>Email address</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class=
+ "EMPHASIS">Unset</i></span></p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>No email address is displayed on error pages and the CGI
+ user interface.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>If both <tt class="LITERAL">admin-address</tt> and
+ <tt class="LITERAL">proxy-info-url</tt> are unset, the whole
+ "Local Privoxy Support" box on all generated pages will not be
+ shown.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="PROXY-INFO-URL" id="PROXY-INFO-URL">7.1.4.
+ proxy-info-url</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>A URL to documentation about the local <span class=
+ "APPLICATION">Privoxy</span> setup, configuration or
+ policies.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>URL</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class=
+ "EMPHASIS">Unset</i></span></p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>No link to local documentation is displayed on error pages
+ and the CGI user interface.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>If both <tt class="LITERAL">admin-address</tt> and
+ <tt class="LITERAL">proxy-info-url</tt> are unset, the whole
+ "Local Privoxy Support" box on all generated pages will not be
+ shown.</p>
+
+ <p>This URL shouldn't be blocked ;-)</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+ </div>
+
+ <div class="SECT2">
+ <h2 class="SECT2"><a name="CONF-LOG-LOC" id="CONF-LOG-LOC">7.2.
+ Configuration and Log File Locations</a></h2>
+
+ <p><span class="APPLICATION">Privoxy</span> can (and normally does) use
+ a number of other files for additional configuration, help and logging.
+ This section of the configuration file tells <span class=
+ "APPLICATION">Privoxy</span> where to find those other files.</p>
+
+ <p>The user running <span class="APPLICATION">Privoxy</span>, must have
+ read permission for all configuration files, and write permission to
+ any files that would be modified, such as log files and actions
+ files.</p>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="CONFDIR" id="CONFDIR">7.2.1.
+ confdir</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>The directory where the other configuration files are
+ located.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>Path name</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>/etc/privoxy (Unix) <span class="emphasis"><i class=
+ "EMPHASIS">or</i></span> <span class=
+ "APPLICATION">Privoxy</span> installation dir (Windows)</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class=
+ "EMPHASIS">Mandatory</i></span></p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>No trailing <span class="QUOTE">"<tt class=
+ "LITERAL">/</tt>"</span>, please.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="TEMPLDIR" id="TEMPLDIR">7.2.2.
+ templdir</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>An alternative directory where the templates are loaded
+ from.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>Path name</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>unset</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>The templates are assumed to be located in
+ confdir/template.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p><span class="APPLICATION">Privoxy's</span> original
+ templates are usually overwritten with each update. Use this
+ option to relocate customized templates that should be kept. As
+ template variables might change between updates, you shouldn't
+ expect templates to work with <span class=
+ "APPLICATION">Privoxy</span> releases other than the one they
+ were part of, though.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="TEMPORARY-DIRECTORY" id=
+ "TEMPORARY-DIRECTORY">7.2.3. temporary-directory</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>A directory where Privoxy can create temporary files.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>Path name</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>unset</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>No temporary files are created, external filters don't
+ work.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>To execute <tt class="LITERAL"><a href=
+ "actions-file.html#EXTERNAL-FILTER" target="_top">external
+ filters</a></tt>, <span class="APPLICATION">Privoxy</span> has
+ to create temporary files. This directive specifies the
+ directory the temporary files should be written to.</p>
+
+ <p>It should be a directory only <span class=
+ "APPLICATION">Privoxy</span> (and trusted users) can
+ access.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="LOGDIR" id="LOGDIR">7.2.4. logdir</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>The directory where all logging takes place (i.e. where the
+ <tt class="FILENAME">logfile</tt> is located).</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>Path name</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>/var/log/privoxy (Unix) <span class="emphasis"><i class=
+ "EMPHASIS">or</i></span> <span class=
+ "APPLICATION">Privoxy</span> installation dir (Windows)</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class=
+ "EMPHASIS">Mandatory</i></span></p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>No trailing <span class="QUOTE">"<tt class=
+ "LITERAL">/</tt>"</span>, please.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="ACTIONSFILE" id="ACTIONSFILE">7.2.5.
+ actionsfile</a></h4><a name="DEFAULT.ACTION" id=
+ "DEFAULT.ACTION"></a><a name="STANDARD.ACTION" id=
+ "STANDARD.ACTION"></a><a name="USER.ACTION" id="USER.ACTION"></a>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>The <a href="actions-file.html">actions file(s)</a> to
+ use</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>Complete file name, relative to <tt class=
+ "LITERAL">confdir</tt></p>
+ </dd>
+
+ <dt>Default values:</dt>
+
+ <dd>
+ <table border="0">
+ <tbody>
+ <tr>
+ <td>
+ <p class="LITERALLAYOUT">
+ match-all.action # Actions that are applied to all sites and maybe overruled later on.</p>
+ </td>
+ </tr>
+
+ <tr>
+ <td>
+ <p class="LITERALLAYOUT">
+ default.action # Main actions file</p>
+ </td>
+ </tr>
+
+ <tr>
+ <td>
+ <p class="LITERALLAYOUT">
+ user.action # User customizations</p>
+ </td>
+ </tr>
+ </tbody>
+ </table>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>No actions are taken at all. More or less neutral
+ proxying.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>Multiple <tt class="LITERAL">actionsfile</tt> lines are
+ permitted, and are in fact recommended!</p>
+
+ <p>The default values are <tt class=
+ "FILENAME">default.action</tt>, which is the <span class=
+ "QUOTE">"main"</span> actions file maintained by the
+ developers, and <tt class="FILENAME">user.action</tt>, where
+ you can make your personal additions.</p>
+
+ <p>Actions files contain all the per site and per URL
+ configuration for ad blocking, cookie management, privacy
+ considerations, etc.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="FILTERFILE" id="FILTERFILE">7.2.6.
+ filterfile</a></h4><a name="DEFAULT.FILTER" id="DEFAULT.FILTER"></a>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>The <a href="filter-file.html">filter file(s)</a> to use</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>File name, relative to <tt class="LITERAL">confdir</tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>default.filter (Unix) <span class="emphasis"><i class=
+ "EMPHASIS">or</i></span> default.filter.txt (Windows)</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>No textual content filtering takes place, i.e. all
+ <tt class="LITERAL">+<a href=
+ "actions-file.html#FILTER">filter</a>{<tt class=
+ "REPLACEABLE"><i>name</i></tt>}</tt> actions in the actions
+ files are turned neutral.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>Multiple <tt class="LITERAL">filterfile</tt> lines are
+ permitted.</p>
+
+ <p>The <a href="filter-file.html">filter files</a> contain
+ content modification rules that use <a href=
+ "appendix.html#REGEX">regular expressions</a>. These rules
+ permit powerful changes on the content of Web pages, and
+ optionally the headers as well, e.g., you could try to disable
+ your favorite JavaScript annoyances, re-write the actual
+ displayed text, or just have some fun playing buzzword bingo
+ with web pages.</p>
+
+ <p>The <tt class="LITERAL">+<a href=
+ "actions-file.html#FILTER">filter</a>{<tt class=
+ "REPLACEABLE"><i>name</i></tt>}</tt> actions rely on the
+ relevant filter (<tt class="REPLACEABLE"><i>name</i></tt>) to
+ be defined in a filter file!</p>
+
+ <p>A pre-defined filter file called <tt class=
+ "FILENAME">default.filter</tt> that contains a number of useful
+ filters for common problems is included in the distribution.
+ See the section on the <tt class="LITERAL"><a href=
+ "actions-file.html#FILTER">filter</a></tt> action for a
+ list.</p>
+
+ <p>It is recommended to place any locally adapted filters into
+ a separate file, such as <tt class=
+ "FILENAME">user.filter</tt>.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="LOGFILE" id="LOGFILE">7.2.7.
+ logfile</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>The log file to use</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>File name, relative to <tt class="LITERAL">logdir</tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class="EMPHASIS">Unset (commented
+ out)</i></span>. When activated: logfile (Unix) <span class=
+ "emphasis"><i class="EMPHASIS">or</i></span> privoxy.log
+ (Windows).</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>No logfile is written.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>The logfile is where all logging and error messages are
+ written. The level of detail and number of messages are set
+ with the <tt class="LITERAL">debug</tt> option (see below). The
+ logfile can be useful for tracking down a problem with
+ <span class="APPLICATION">Privoxy</span> (e.g., it's not
+ blocking an ad you think it should block) and it can help you
+ to monitor what your browser is doing.</p>
+
+ <p>Depending on the debug options below, the logfile may be a
+ privacy risk if third parties can get access to it. As most
+ users will never look at it, <span class=
+ "APPLICATION">Privoxy</span> only logs fatal errors by
+ default.</p>
+
+ <p>For most troubleshooting purposes, you will have to change
+ that, please refer to the debugging section for details.</p>
+
+ <p>Any log files must be writable by whatever user <span class=
+ "APPLICATION">Privoxy</span> is being run as (on Unix, default
+ user id is <span class="QUOTE">"privoxy"</span>).</p>
+
+ <p>To prevent the logfile from growing indefinitely, it is
+ recommended to periodically rotate or shorten it. Many
+ operating systems support log rotation out of the box, some
+ require additional software to do it. For details, please refer
+ to the documentation for your operating system.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="TRUSTFILE" id="TRUSTFILE">7.2.8.
+ trustfile</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>The name of the trust file to use</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>File name, relative to <tt class="LITERAL">confdir</tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class="EMPHASIS">Unset (commented
+ out)</i></span>. When activated: trust (Unix) <span class=
+ "emphasis"><i class="EMPHASIS">or</i></span> trust.txt
+ (Windows)</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>The entire trust mechanism is disabled.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>The trust mechanism is an experimental feature for building
+ white-lists and should be used with care. It is <span class=
+ "emphasis"><i class="EMPHASIS">NOT</i></span> recommended for
+ the casual user.</p>
+
+ <p>If you specify a trust file, <span class=
+ "APPLICATION">Privoxy</span> will only allow access to sites
+ that are specified in the trustfile. Sites can be listed in one
+ of two ways:</p>
+
+ <p>Prepending a <tt class="LITERAL">~</tt> character limits
+ access to this site only (and any sub-paths within this site),
+ e.g. <tt class="LITERAL">~www.example.com</tt> allows access to
+ <tt class="LITERAL">~www.example.com/features/news.html</tt>,
+ etc.</p>
+
+ <p>Or, you can designate sites as <span class=
+ "emphasis"><i class="EMPHASIS">trusted referrers</i></span>, by
+ prepending the name with a <tt class="LITERAL">+</tt>
+ character. The effect is that access to untrusted sites will be
+ granted -- but only if a link from this trusted referrer was
+ used to get there. The link target will then be added to the
+ <span class="QUOTE">"trustfile"</span> so that future, direct
+ accesses will be granted. Sites added via this mechanism do not
+ become trusted referrers themselves (i.e. they are added with a
+ <tt class="LITERAL">~</tt> designation). There is a limit of
+ 512 such entries, after which new entries will not be made.</p>
+
+ <p>If you use the <tt class="LITERAL">+</tt> operator in the
+ trust file, it may grow considerably over time.</p>
+
+ <p>It is recommended that <span class=
+ "APPLICATION">Privoxy</span> be compiled with the <tt class=
+ "LITERAL">--disable-force</tt>, <tt class=
+ "LITERAL">--disable-toggle</tt> and <tt class=
+ "LITERAL">--disable-editor</tt> options, if this feature is to
+ be used.</p>
+
+ <p>Possible applications include limiting Internet access for
+ children.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+ </div>
+
+ <div class="SECT2">
+ <h2 class="SECT2"><a name="DEBUGGING" id="DEBUGGING">7.3.
+ Debugging</a></h2>
+
+ <p>These options are mainly useful when tracing a problem. Note that
+ you might also want to invoke <span class="APPLICATION">Privoxy</span>
+ with the <tt class="LITERAL">--no-daemon</tt> command line option when
+ debugging.</p>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="DEBUG" id="DEBUG">7.3.1. debug</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Key values that determine what information gets logged.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>Integer values</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>0 (i.e.: only fatal errors (that cause Privoxy to exit) are
+ logged)</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Default value is used (see above).</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>The available debug levels are:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="PROGRAMLISTING">
+ debug 1 # Log the destination for each request <span class=
+"APPLICATION">Privoxy</span> let through. See also debug 1024.
+ debug 2 # show each connection status
+ debug 4 # show I/O status
+ debug 8 # show header parsing
+ debug 16 # log all data written to the network
+ debug 32 # debug force feature
+ debug 64 # debug regular expression filters
+ debug 128 # debug redirects
+ debug 256 # debug GIF de-animation
+ debug 512 # Common Log Format
+ debug 1024 # Log the destination for requests <span class=
+"APPLICATION">Privoxy</span> didn't let through, and the reason why.
+ debug 2048 # CGI user interface
+ debug 4096 # Startup banner and warnings.
+ debug 8192 # Non-fatal errors
+ debug 32768 # log all data read from the network
+ debug 65536 # Log the applying actions
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>To select multiple debug levels, you can either add them or
+ use multiple <tt class="LITERAL">debug</tt> lines.</p>
+
+ <p>A debug level of 1 is informative because it will show you
+ each request as it happens. <span class="emphasis"><i class=
+ "EMPHASIS">1, 1024, 4096 and 8192 are recommended</i></span> so
+ that you will notice when things go wrong. The other levels are
+ probably only of interest if you are hunting down a specific
+ problem. They can produce a hell of an output (especially
+ 16).</p>
+
+ <p>If you are used to the more verbose settings, simply enable
+ the debug lines below again.</p>
+
+ <p>If you want to use pure CLF (Common Log Format), you should
+ set <span class="QUOTE">"debug 512"</span> <span class=
+ "emphasis"><i class="EMPHASIS">ONLY</i></span> and not enable
+ anything else.</p>
+
+ <p><span class="APPLICATION">Privoxy</span> has a hard-coded
+ limit for the length of log messages. If it's reached, messages
+ are logged truncated and marked with <span class="QUOTE">"...
+ [too long, truncated]"</span>.</p>
+
+ <p>Please don't file any support requests without trying to
+ reproduce the problem with increased debug level first. Once
+ you read the log messages, you may even be able to solve the
+ problem on your own.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="SINGLE-THREADED" id=
+ "SINGLE-THREADED">7.3.2. single-threaded</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Whether to run only one server thread.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class="EMPHASIS">1 or
+ 0</i></span></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class="EMPHASIS">0</i></span></p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Multi-threaded (or, where unavailable: forked) operation,
+ i.e. the ability to serve multiple requests simultaneously.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>This option is only there for debugging purposes.
+ <span class="emphasis"><i class="EMPHASIS">It will drastically
+ reduce performance.</i></span></p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="HOSTNAME" id="HOSTNAME">7.3.3.
+ hostname</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>The hostname shown on the CGI pages.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>Text</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class=
+ "EMPHASIS">Unset</i></span></p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>The hostname provided by the operating system is used.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>On some misconfigured systems resolving the hostname fails
+ or takes too much time and slows Privoxy down. Setting a fixed
+ hostname works around the problem.</p>
+
+ <p>In other circumstances it might be desirable to show a
+ hostname other than the one returned by the operating system.
+ For example if the system has several different hostnames and
+ you don't want to use the first one.</p>
+
+ <p>Note that Privoxy does not validate the specified hostname
+ value.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+ </div>
+
+ <div class="SECT2">
+ <h2 class="SECT2"><a name="ACCESS-CONTROL" id="ACCESS-CONTROL">7.4.
+ Access Control and Security</a></h2>
+
+ <p>This section of the config file controls the security-relevant
+ aspects of <span class="APPLICATION">Privoxy</span>'s
+ configuration.</p>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="LISTEN-ADDRESS" id="LISTEN-ADDRESS">7.4.1.
+ listen-address</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>The address and TCP port on which <span class=
+ "APPLICATION">Privoxy</span> will listen for client
+ requests.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>[<tt class="REPLACEABLE"><i>IP-Address</i></tt>]:<tt class=
+ "REPLACEABLE"><i>Port</i></tt></p>
+
+ <p>[<tt class="REPLACEABLE"><i>Hostname</i></tt>]:<tt class=
+ "REPLACEABLE"><i>Port</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>127.0.0.1:8118</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Bind to 127.0.0.1 (IPv4 localhost), port 8118. This is
+ suitable and recommended for home users who run <span class=
+ "APPLICATION">Privoxy</span> on the same machine as their
+ browser.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>You will need to configure your browser(s) to this proxy
+ address and port.</p>
+
+ <p>If you already have another service running on port 8118, or
+ if you want to serve requests from other machines (e.g. on your
+ local network) as well, you will need to override the
+ default.</p>
+
+ <p>You can use this statement multiple times to make
+ <span class="APPLICATION">Privoxy</span> listen on more ports
+ or more <abbr class="ABBREV">IP</abbr> addresses. Suitable if
+ your operating system does not support sharing <abbr class=
+ "ABBREV">IPv6</abbr> and <abbr class="ABBREV">IPv4</abbr>
+ protocols on the same socket.</p>
+
+ <p>If a hostname is used instead of an IP address, <span class=
+ "APPLICATION">Privoxy</span> will try to resolve it to an IP
+ address and if there are multiple, use the first one
+ returned.</p>
+
+ <p>If the address for the hostname isn't already known on the
+ system (for example because it's in /etc/hostname), this may
+ result in DNS traffic.</p>
+
+ <p>If the specified address isn't available on the system, or
+ if the hostname can't be resolved, <span class=
+ "APPLICATION">Privoxy</span> will fail to start.</p>
+
+ <p>IPv6 addresses containing colons have to be quoted by
+ brackets. They can only be used if <span class=
+ "APPLICATION">Privoxy</span> has been compiled with IPv6
+ support. If you aren't sure if your version supports it, have a
+ look at <tt class=
+ "LITERAL">http://config.privoxy.org/show-status</tt>.</p>
+
+ <p>Some operating systems will prefer IPv6 to IPv4 addresses
+ even if the system has no IPv6 connectivity which is usually
+ not expected by the user. Some even rely on DNS to resolve
+ localhost which mean the "localhost" address used may not
+ actually be local.</p>
+
+ <p>It is therefore recommended to explicitly configure the
+ intended IP address instead of relying on the operating system,
+ unless there's a strong reason not to.</p>
+
+ <p>If you leave out the address, <span class=
+ "APPLICATION">Privoxy</span> will bind to all IPv4 interfaces
+ (addresses) on your machine and may become reachable from the
+ Internet and/or the local network. Be aware that some GNU/Linux
+ distributions modify that behaviour without updating the
+ documentation. Check for non-standard patches if your
+ <span class="APPLICATION">Privoxy</span> version behaves
+ differently.</p>
+
+ <p>If you configure <span class="APPLICATION">Privoxy</span> to
+ be reachable from the network, consider using <a href=
+ "config.html#ACLS">access control lists</a> (ACL's, see below),
+ and/or a firewall.</p>
+
+ <p>If you open <span class="APPLICATION">Privoxy</span> to
+ untrusted users, you will also want to make sure that the
+ following actions are disabled: <tt class="LITERAL"><a href=
+ "config.html#ENABLE-EDIT-ACTIONS">enable-edit-actions</a></tt>
+ and <tt class="LITERAL"><a href=
+ "config.html#ENABLE-REMOTE-TOGGLE">enable-remote-toggle</a></tt></p>
+ </dd>
+
+ <dt>Example:</dt>
+
+ <dd>
+ <p>Suppose you are running <span class=
+ "APPLICATION">Privoxy</span> on a machine which has the address
+ 192.168.0.1 on your local private network (192.168.0.0) and has
+ another outside connection with a different address. You want
+ it to serve requests from inside only:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="PROGRAMLISTING">
+ listen-address 192.168.0.1:8118
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>Suppose you are running <span class=
+ "APPLICATION">Privoxy</span> on an IPv6-capable machine and you
+ want it to listen on the IPv6 address of the loopback
+ device:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="PROGRAMLISTING">
+ listen-address [::1]:8118
+</pre>
+ </td>
+ </tr>
+ </table>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="TOGGLE" id="TOGGLE">7.4.2. toggle</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Initial state of "toggle" status</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>1 or 0</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>1</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Act as if toggled on</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>If set to 0, <span class="APPLICATION">Privoxy</span> will
+ start in <span class="QUOTE">"toggled off"</span> mode, i.e.
+ mostly behave like a normal, content-neutral proxy with both ad
+ blocking and content filtering disabled. See <tt class=
+ "LITERAL">enable-remote-toggle</tt> below.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="ENABLE-REMOTE-TOGGLE" id=
+ "ENABLE-REMOTE-TOGGLE">7.4.3. enable-remote-toggle</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Whether or not the <a href=
+ "http://config.privoxy.org/toggle" target="_top">web-based
+ toggle feature</a> may be used</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>0 or 1</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>0</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>The web-based toggle feature is disabled.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>When toggled off, <span class="APPLICATION">Privoxy</span>
+ mostly acts like a normal, content-neutral proxy, i.e. doesn't
+ block ads or filter content.</p>
+
+ <p>Access to the toggle feature can <span class=
+ "emphasis"><i class="EMPHASIS">not</i></span> be controlled
+ separately by <span class="QUOTE">"ACLs"</span> or HTTP
+ authentication, so that everybody who can access <span class=
+ "APPLICATION">Privoxy</span> (see <span class=
+ "QUOTE">"ACLs"</span> and <tt class=
+ "LITERAL">listen-address</tt> above) can toggle it for all
+ users. So this option is <span class="emphasis"><i class=
+ "EMPHASIS">not recommended</i></span> for multi-user
+ environments with untrusted users.</p>
+
+ <p>Note that malicious client side code (e.g Java) is also
+ capable of using this option.</p>
+
+ <p>As a lot of <span class="APPLICATION">Privoxy</span> users
+ don't read documentation, this feature is disabled by
+ default.</p>
+
+ <p>Note that you must have compiled <span class=
+ "APPLICATION">Privoxy</span> with support for this feature,
+ otherwise this option has no effect.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="ENABLE-REMOTE-HTTP-TOGGLE" id=
+ "ENABLE-REMOTE-HTTP-TOGGLE">7.4.4. enable-remote-http-toggle</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Whether or not Privoxy recognizes special HTTP headers to
+ change its behaviour.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>0 or 1</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>0</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Privoxy ignores special HTTP headers.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>When toggled on, the client can change <span class=
+ "APPLICATION">Privoxy's</span> behaviour by setting special
+ HTTP headers. Currently the only supported special header is
+ <span class="QUOTE">"X-Filter: No"</span>, to disable filtering
+ for the ongoing request, even if it is enabled in one of the
+ action files.</p>
+
+ <p>This feature is disabled by default. If you are using
+ <span class="APPLICATION">Privoxy</span> in a environment with
+ trusted clients, you may enable this feature at your
+ discretion. Note that malicious client side code (e.g Java) is
+ also capable of using this feature.</p>
+
+ <p>This option will be removed in future releases as it has
+ been obsoleted by the more general header taggers.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="ENABLE-EDIT-ACTIONS" id=
+ "ENABLE-EDIT-ACTIONS">7.4.5. enable-edit-actions</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Whether or not the <a href=
+ "http://config.privoxy.org/show-status" target="_top">web-based
+ actions file editor</a> may be used</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>0 or 1</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>0</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>The web-based actions file editor is disabled.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>Access to the editor can <span class="emphasis"><i class=
+ "EMPHASIS">not</i></span> be controlled separately by
+ <span class="QUOTE">"ACLs"</span> or HTTP authentication, so
+ that everybody who can access <span class=
+ "APPLICATION">Privoxy</span> (see <span class=
+ "QUOTE">"ACLs"</span> and <tt class=
+ "LITERAL">listen-address</tt> above) can modify its
+ configuration for all users.</p>
+
+ <p>This option is <span class="emphasis"><i class=
+ "EMPHASIS">not recommended</i></span> for environments with
+ untrusted users and as a lot of <span class=
+ "APPLICATION">Privoxy</span> users don't read documentation,
+ this feature is disabled by default.</p>
+
+ <p>Note that malicious client side code (e.g Java) is also
+ capable of using the actions editor and you shouldn't enable
+ this options unless you understand the consequences and are
+ sure your browser is configured correctly.</p>
+
+ <p>Note that you must have compiled <span class=
+ "APPLICATION">Privoxy</span> with support for this feature,
+ otherwise this option has no effect.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="ENFORCE-BLOCKS" id="ENFORCE-BLOCKS">7.4.6.
+ enforce-blocks</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Whether the user is allowed to ignore blocks and can
+ <span class="QUOTE">"go there anyway"</span>.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>0 or 1</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class="EMPHASIS">0</i></span></p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Blocks are not enforced.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p><span class="APPLICATION">Privoxy</span> is mainly used to
+ block and filter requests as a service to the user, for example
+ to block ads and other junk that clogs the pipes. <span class=
+ "APPLICATION">Privoxy's</span> configuration isn't perfect and
+ sometimes innocent pages are blocked. In this situation it
+ makes sense to allow the user to enforce the request and have
+ <span class="APPLICATION">Privoxy</span> ignore the block.</p>
+
+ <p>In the default configuration <span class=
+ "APPLICATION">Privoxy's</span> <span class=
+ "QUOTE">"Blocked"</span> page contains a <span class=
+ "QUOTE">"go there anyway"</span> link to adds a special string
+ (the force prefix) to the request URL. If that link is used,
+ <span class="APPLICATION">Privoxy</span> will detect the force
+ prefix, remove it again and let the request pass.</p>
+
+ <p>Of course <span class="APPLICATION">Privoxy</span> can also
+ be used to enforce a network policy. In that case the user
+ obviously should not be able to bypass any blocks, and that's
+ what the <span class="QUOTE">"enforce-blocks"</span> option is
+ for. If it's enabled, <span class="APPLICATION">Privoxy</span>
+ hides the <span class="QUOTE">"go there anyway"</span> link. If
+ the user adds the force prefix by hand, it will not be accepted
+ and the circumvention attempt is logged.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>enforce-blocks 1</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="ACLS" id="ACLS">7.4.7. ACLs: permit-access
+ and deny-access</a></h4><a name="PERMIT-ACCESS" id=
+ "PERMIT-ACCESS"></a><a name="DENY-ACCESS" id="DENY-ACCESS"></a>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Who can access what.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>src_addr</i></tt>[:<tt class=
+ "REPLACEABLE"><i>port</i></tt>][/<tt class=
+ "REPLACEABLE"><i>src_masklen</i></tt>] [<tt class=
+ "REPLACEABLE"><i>dst_addr</i></tt>[:<tt class=
+ "REPLACEABLE"><i>port</i></tt>][/<tt class=
+ "REPLACEABLE"><i>dst_masklen</i></tt>]]</p>
+
+ <p>Where <tt class="REPLACEABLE"><i>src_addr</i></tt> and
+ <tt class="REPLACEABLE"><i>dst_addr</i></tt> are IPv4 addresses
+ in dotted decimal notation or valid DNS names, <tt class=
+ "REPLACEABLE"><i>port</i></tt> is a port number, and <tt class=
+ "REPLACEABLE"><i>src_masklen</i></tt> and <tt class=
+ "REPLACEABLE"><i>dst_masklen</i></tt> are subnet masks in CIDR
+ notation, i.e. integer values from 2 to 30 representing the
+ length (in bits) of the network address. The masks and the
+ whole destination part are optional.</p>
+
+ <p>If your system implements <a href=
+ "http://tools.ietf.org/html/rfc3493" target="_top">RFC
+ 3493</a>, then <tt class="REPLACEABLE"><i>src_addr</i></tt> and
+ <tt class="REPLACEABLE"><i>dst_addr</i></tt> can be IPv6
+ addresses delimeted by brackets, <tt class=
+ "REPLACEABLE"><i>port</i></tt> can be a number or a service
+ name, and <tt class="REPLACEABLE"><i>src_masklen</i></tt> and
+ <tt class="REPLACEABLE"><i>dst_masklen</i></tt> can be a number
+ from 0 to 128.</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class=
+ "EMPHASIS">Unset</i></span></p>
+
+ <p>If no <tt class="REPLACEABLE"><i>port</i></tt> is specified,
+ any port will match. If no <tt class=
+ "REPLACEABLE"><i>src_masklen</i></tt> or <tt class=
+ "REPLACEABLE"><i>src_masklen</i></tt> is given, the complete IP
+ address has to match (i.e. 32 bits for IPv4 and 128 bits for
+ IPv6).</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Don't restrict access further than implied by <tt class=
+ "LITERAL">listen-address</tt></p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>Access controls are included at the request of ISPs and
+ systems administrators, and <span class="emphasis"><i class=
+ "EMPHASIS">are not usually needed by individual
+ users</i></span>. For a typical home user, it will normally
+ suffice to ensure that <span class="APPLICATION">Privoxy</span>
+ only listens on the localhost (127.0.0.1) or internal (home)
+ network address by means of the <a href=
+ "config.html#LISTEN-ADDRESS"><span class="emphasis"><i class=
+ "EMPHASIS">listen-address</i></span></a> option.</p>
+
+ <p>Please see the warnings in the FAQ that <span class=
+ "APPLICATION">Privoxy</span> is not intended to be a substitute
+ for a firewall or to encourage anyone to defer addressing basic
+ security weaknesses.</p>
+
+ <p>Multiple ACL lines are OK. If any ACLs are specified,
+ <span class="APPLICATION">Privoxy</span> only talks to IP
+ addresses that match at least one <tt class=
+ "LITERAL">permit-access</tt> line and don't match any
+ subsequent <tt class="LITERAL">deny-access</tt> line. In other
+ words, the last match wins, with the default being <tt class=
+ "LITERAL">deny-access</tt>.</p>
+
+ <p>If <span class="APPLICATION">Privoxy</span> is using a
+ forwarder (see <tt class="LITERAL">forward</tt> below) for a
+ particular destination URL, the <tt class=
+ "REPLACEABLE"><i>dst_addr</i></tt> that is examined is the
+ address of the forwarder and <span class="emphasis"><i class=
+ "EMPHASIS">NOT</i></span> the address of the ultimate target.
+ This is necessary because it may be impossible for the local
+ <span class="APPLICATION">Privoxy</span> to determine the IP
+ address of the ultimate target (that's often what gateways are
+ used for).</p>
+
+ <p>You should prefer using IP addresses over DNS names, because
+ the address lookups take time. All DNS names must resolve! You
+ can <span class="emphasis"><i class="EMPHASIS">not</i></span>
+ use domain patterns like <span class="QUOTE">"*.org"</span> or
+ partial domain names. If a DNS name resolves to multiple IP
+ addresses, only the first one is used.</p>
+
+ <p>Some systems allow IPv4 clients to connect to IPv6 server
+ sockets. Then the client's IPv4 address will be translated by
+ the system into IPv6 address space with special prefix
+ ::ffff:0:0/96 (so called IPv4 mapped IPv6 address).
+ <span class="APPLICATION">Privoxy</span> can handle it and maps
+ such ACL addresses automatically.</p>
+
+ <p>Denying access to particular sites by ACL may have undesired
+ side effects if the site in question is hosted on a machine
+ which also hosts other sites (most sites are).</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>Explicitly define the default behavior if no ACL and
+ <tt class="LITERAL">listen-address</tt> are set: <span class=
+ "QUOTE">"localhost"</span> is OK. The absence of a <tt class=
+ "REPLACEABLE"><i>dst_addr</i></tt> implies that <span class=
+ "emphasis"><i class="EMPHASIS">all</i></span> destination
+ addresses are OK:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ permit-access localhost
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>Allow any host on the same class C subnet as www.privoxy.org
+ access to nothing but www.example.com (or other domains hosted
+ on the same system):</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ permit-access www.privoxy.org/24 www.example.com/32
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>Allow access from any host on the 26-bit subnet
+ 192.168.45.64 to anywhere, with the exception that
+ 192.168.45.73 may not access the IP address behind
+ www.dirty-stuff.example.com:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ permit-access 192.168.45.64/26
+ deny-access 192.168.45.73 www.dirty-stuff.example.com
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>Allow access from the IPv4 network 192.0.2.0/24 even if
+ listening on an IPv6 wild card address (not supported on all
+ platforms):</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="PROGRAMLISTING">
+ permit-access 192.0.2.0/24
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>This is equivalent to the following line even if listening
+ on an IPv4 address (not supported on all platforms):</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="PROGRAMLISTING">
+ permit-access [::ffff:192.0.2.0]/120
+</pre>
+ </td>
+ </tr>
+ </table>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="BUFFER-LIMIT" id="BUFFER-LIMIT">7.4.8.
+ buffer-limit</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Maximum size of the buffer for content filtering.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>Size in Kbytes</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>4096</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Use a 4MB (4096 KB) limit.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>For content filtering, i.e. the <tt class=
+ "LITERAL">+filter</tt> and <tt class=
+ "LITERAL">+deanimate-gif</tt> actions, it is necessary that
+ <span class="APPLICATION">Privoxy</span> buffers the entire
+ document body. This can be potentially dangerous, since a
+ server could just keep sending data indefinitely and wait for
+ your RAM to exhaust -- with nasty consequences. Hence this
+ option.</p>
+
+ <p>When a document buffer size reaches the <tt class=
+ "LITERAL">buffer-limit</tt>, it is flushed to the client
+ unfiltered and no further attempt to filter the rest of the
+ document is made. Remember that there may be multiple threads
+ running, which might require up to <tt class=
+ "LITERAL">buffer-limit</tt> Kbytes <span class=
+ "emphasis"><i class="EMPHASIS">each</i></span>, unless you have
+ enabled <span class="QUOTE">"single-threaded"</span> above.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="ENABLE-PROXY-AUTHENTICATION-FORWARDING"
+ id="ENABLE-PROXY-AUTHENTICATION-FORWARDING">7.4.9.
+ enable-proxy-authentication-forwarding</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Whether or not proxy authentication through <span class=
+ "APPLICATION">Privoxy</span> should work.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p>0 or 1</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>0</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Proxy authentication headers are removed.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>Privoxy itself does not support proxy authentication, but
+ can allow clients to authenticate against Privoxy's parent
+ proxy.</p>
+
+ <p>By default Privoxy (3.0.21 and later) don't do that and
+ remove Proxy-Authorization headers in requests and
+ Proxy-Authenticate headers in responses to make it harder for
+ malicious sites to trick inexperienced users into providing
+ login information.</p>
+
+ <p>If this option is enabled the headers are forwarded.</p>
+
+ <p>Enabling this option is <span class="emphasis"><i class=
+ "EMPHASIS">not recommended</i></span> if there is no parent
+ proxy that requires authentication or if the local network
+ between Privoxy and the parent proxy isn't trustworthy. If
+ proxy authentication is only required for some requests, it is
+ recommended to use a client header filter to remove the
+ authentication headers for requests where they aren't
+ needed.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+ </div>
+
+ <div class="SECT2">
+ <h2 class="SECT2"><a name="FORWARDING" id="FORWARDING">7.5.
+ Forwarding</a></h2>
+
+ <p>This feature allows routing of HTTP requests through a chain of
+ multiple proxies.</p>
+
+ <p>Forwarding can be used to chain Privoxy with a caching proxy to
+ speed up browsing. Using a parent proxy may also be necessary if the
+ machine that <span class="APPLICATION">Privoxy</span> runs on has no
+ direct Internet access.</p>
+
+ <p>Note that parent proxies can severely decrease your privacy level.
+ For example a parent proxy could add your IP address to the request
+ headers and if it's a caching proxy it may add the <span class=
+ "QUOTE">"Etag"</span> header to revalidation requests again, even
+ though you configured Privoxy to remove it. It may also ignore
+ Privoxy's header time randomization and use the original values which
+ could be used by the server as cookie replacement to track your steps
+ between visits.</p>
+
+ <p>Also specified here are SOCKS proxies. <span class=
+ "APPLICATION">Privoxy</span> supports the SOCKS 4 and SOCKS 4A
+ protocols.</p>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="FORWARD" id="FORWARD">7.5.1.
+ forward</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>To which parent HTTP proxy specific requests should be
+ routed.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>target_pattern</i></tt>
+ <tt class="REPLACEABLE"><i>http_parent</i></tt>[:<tt class=
+ "REPLACEABLE"><i>port</i></tt>]</p>
+
+ <p>where <tt class="REPLACEABLE"><i>target_pattern</i></tt> is
+ a <a href="actions-file.html#AF-PATTERNS">URL pattern</a> that
+ specifies to which requests (i.e. URLs) this forward rule shall
+ apply. Use <tt class="LITERAL">/</tt> to denote <span class=
+ "QUOTE">"all URLs"</span>. <tt class=
+ "REPLACEABLE"><i>http_parent</i></tt>[:<tt class=
+ "REPLACEABLE"><i>port</i></tt>] is the DNS name or IP address
+ of the parent HTTP proxy through which the requests should be
+ forwarded, optionally followed by its listening port (default:
+ 8000). Use a single dot (<tt class="LITERAL">.</tt>) to denote
+ <span class="QUOTE">"no forwarding"</span>.</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class=
+ "EMPHASIS">Unset</i></span></p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Don't use parent HTTP proxies.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>If <tt class="REPLACEABLE"><i>http_parent</i></tt> is
+ <span class="QUOTE">"."</span>, then requests are not forwarded
+ to another HTTP proxy but are made directly to the web
+ servers.</p>
+
+ <p><tt class="REPLACEABLE"><i>http_parent</i></tt> can be a
+ numerical IPv6 address (if <a href=
+ "http://tools.ietf.org/html/rfc3493" target="_top">RFC 3493</a>
+ is implemented). To prevent clashes with the port delimiter,
+ the whole IP address has to be put into brackets. On the other
+ hand a <tt class="REPLACEABLE"><i>target_pattern</i></tt>
+ containing an IPv6 address has to be put into angle brackets
+ (normal brackets are reserved for regular expressions
+ already).</p>
+
+ <p>Multiple lines are OK, they are checked in sequence, and the
+ last match wins.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>Everything goes to an example parent proxy, except SSL on
+ port 443 (which it doesn't handle):</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ forward / parent-proxy.example.org:8080
+ forward :443 .
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>Everything goes to our example ISP's caching proxy, except
+ for requests to that ISP's sites:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ forward / caching-proxy.isp.example.net:8000
+ forward .isp.example.net .
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>Parent proxy specified by an IPv6 address:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="PROGRAMLISTING">
+ forward / [2001:DB8::1]:8000
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>Suppose your parent proxy doesn't support IPv6:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="PROGRAMLISTING">
+ forward / parent-proxy.example.org:8000
+ forward ipv6-server.example.org .
+ forward <[2-3][0-9a-f][0-9a-f][0-9a-f]:*> .
+</pre>
+ </td>
+ </tr>
+ </table>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="SOCKS" id="SOCKS">7.5.2. forward-socks4,
+ forward-socks4a, forward-socks5 and forward-socks5t</a></h4><a name=
+ "FORWARD-SOCKS4" id="FORWARD-SOCKS4"></a><a name="FORWARD-SOCKS4A"
+ id="FORWARD-SOCKS4A"></a>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Through which SOCKS proxy (and optionally to which parent
+ HTTP proxy) specific requests should be routed.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>target_pattern</i></tt>
+ <tt class="REPLACEABLE"><i>socks_proxy</i></tt>[:<tt class=
+ "REPLACEABLE"><i>port</i></tt>] <tt class=
+ "REPLACEABLE"><i>http_parent</i></tt>[:<tt class=
+ "REPLACEABLE"><i>port</i></tt>]</p>
+
+ <p>where <tt class="REPLACEABLE"><i>target_pattern</i></tt> is
+ a <a href="actions-file.html#AF-PATTERNS">URL pattern</a> that
+ specifies to which requests (i.e. URLs) this forward rule shall
+ apply. Use <tt class="LITERAL">/</tt> to denote <span class=
+ "QUOTE">"all URLs"</span>. <tt class=
+ "REPLACEABLE"><i>http_parent</i></tt> and <tt class=
+ "REPLACEABLE"><i>socks_proxy</i></tt> are IP addresses in
+ dotted decimal notation or valid DNS names (<tt class=
+ "REPLACEABLE"><i>http_parent</i></tt> may be <span class=
+ "QUOTE">"."</span> to denote <span class="QUOTE">"no HTTP
+ forwarding"</span>), and the optional <tt class=
+ "REPLACEABLE"><i>port</i></tt> parameters are TCP ports, i.e.
+ integer values from 1 to 65535</p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class=
+ "EMPHASIS">Unset</i></span></p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Don't use SOCKS proxies.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>Multiple lines are OK, they are checked in sequence, and the
+ last match wins.</p>
+
+ <p>The difference between <tt class=
+ "LITERAL">forward-socks4</tt> and <tt class=
+ "LITERAL">forward-socks4a</tt> is that in the SOCKS 4A
+ protocol, the DNS resolution of the target hostname happens on
+ the SOCKS server, while in SOCKS 4 it happens locally.</p>
+
+ <p>With <tt class="LITERAL">forward-socks5</tt> the DNS
+ resolution will happen on the remote server as well.</p>
+
+ <p><tt class="LITERAL">forward-socks5t</tt> works like vanilla
+ <tt class="LITERAL">forward-socks5</tt> but lets <span class=
+ "APPLICATION">Privoxy</span> additionally use Tor-specific
+ SOCKS extensions. Currently the only supported SOCKS extension
+ is optimistic data which can reduce the latency for the first
+ request made on a newly created connection.</p>
+
+ <p><tt class="REPLACEABLE"><i>socks_proxy</i></tt> and
+ <tt class="REPLACEABLE"><i>http_parent</i></tt> can be a
+ numerical IPv6 address (if <a href=
+ "http://tools.ietf.org/html/rfc3493" target="_top">RFC 3493</a>
+ is implemented). To prevent clashes with the port delimiter,
+ the whole IP address has to be put into brackets. On the other
+ hand a <tt class="REPLACEABLE"><i>target_pattern</i></tt>
+ containing an IPv6 address has to be put into angle brackets
+ (normal brackets are reserved for regular expressions
+ already).</p>
+
+ <p>If <tt class="REPLACEABLE"><i>http_parent</i></tt> is
+ <span class="QUOTE">"."</span>, then requests are not forwarded
+ to another HTTP proxy but are made (HTTP-wise) directly to the
+ web servers, albeit through a SOCKS proxy.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>From the company example.com, direct connections are made to
+ all <span class="QUOTE">"internal"</span> domains, but
+ everything outbound goes through their ISP's proxy by way of
+ example.com's corporate SOCKS 4A gateway to the Internet.</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ forward-socks4a / socks-gw.example.com:1080 www-cache.isp.example.net:8080
+ forward .example.com .
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>A rule that uses a SOCKS 4 gateway for all destinations but
+ no HTTP parent looks like this:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ forward-socks4 / socks-gw.example.com:1080 .
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>To chain Privoxy and Tor, both running on the same system,
+ you would use something like:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ forward-socks5t / 127.0.0.1:9050 .
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>Note that if you got Tor through one of the bundles, you may
+ have to change the port from 9050 to 9150 (or even another
+ one). For details, please check the documentation on the
+ <a href="https://torproject.org/" target="_top">Tor
+ website</a>.</p>
+
+ <p>The public <span class="APPLICATION">Tor</span> network
+ can't be used to reach your local network, if you need to
+ access local servers you therefore might want to make some
+ exceptions:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ forward 192.168.*.*/ .
forward 10.*.*.*/ .
- forward 127.*.*.*/ .</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><P
-> Unencrypted connections to systems in these address ranges will
- be as (un)secure as the local network is, but the alternative is that you
- can't reach the local network through <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->
- at all. Of course this may actually be desired and there is no reason
- to make these exceptions if you aren't sure you need them.
- </P
-><P
-> If you also want to be able to reach servers in your local network by
- using their names, you will need additional exceptions that look like
- this:
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> forward localhost/ .</PRE
-></TD
-></TR
-></TABLE
->
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="ADVANCED-FORWARDING-EXAMPLES"
->7.5.3. Advanced Forwarding Examples</A
-></H4
-><P
-> If you have links to multiple ISPs that provide various special content
- only to their subscribers, you can configure multiple <SPAN
-CLASS="APPLICATION"
->Privoxies</SPAN
->
- which have connections to the respective ISPs to act as forwarders to each other, so that
- <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->your</I
-></SPAN
-> users can see the internal content of all ISPs.</P
-><P
-> Assume that host-a has a PPP connection to isp-a.example.net. And host-b has a PPP connection to
- isp-b.example.org. Both run <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->. Their forwarding
- configuration can look like this:</P
-><P
-> host-a:</P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="100%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> forward / .
- forward .isp-b.example.net host-b:8118</PRE
-></TD
-></TR
-></TABLE
-></P
-><P
-> host-b:</P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="100%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> forward / .
- forward .isp-a.example.org host-a:8118</PRE
-></TD
-></TR
-></TABLE
-></P
-><P
-> Now, your users can set their browser's proxy to use either
- host-a or host-b and be able to browse the internal content
- of both isp-a and isp-b.</P
-><P
-> If you intend to chain <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> and
- <SPAN
-CLASS="APPLICATION"
->squid</SPAN
-> locally, then chaining as
- <TT
-CLASS="LITERAL"
->browser -> squid -> privoxy</TT
-> is the recommended way. </P
-><P
-> Assuming that <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> and <SPAN
-CLASS="APPLICATION"
->squid</SPAN
->
- run on the same box, your <SPAN
-CLASS="APPLICATION"
->squid</SPAN
-> configuration could then look like this:</P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="100%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> # Define Privoxy as parent proxy (without ICP)
- cache_peer 127.0.0.1 parent 8118 7 no-query
-
- # Define ACL for protocol FTP
- acl ftp proto FTP
+ forward 127.*.*.*/ .
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>Unencrypted connections to systems in these address ranges
+ will be as (un)secure as the local network is, but the
+ alternative is that you can't reach the local network through
+ <span class="APPLICATION">Privoxy</span> at all. Of course this
+ may actually be desired and there is no reason to make these
+ exceptions if you aren't sure you need them.</p>
+
+ <p>If you also want to be able to reach servers in your local
+ network by using their names, you will need additional
+ exceptions that look like this:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ forward localhost/ .
+</pre>
+ </td>
+ </tr>
+ </table>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="ADVANCED-FORWARDING-EXAMPLES" id=
+ "ADVANCED-FORWARDING-EXAMPLES">7.5.3. Advanced Forwarding
+ Examples</a></h4>
+
+ <p>If you have links to multiple ISPs that provide various special
+ content only to their subscribers, you can configure multiple
+ <span class="APPLICATION">Privoxies</span> which have connections to
+ the respective ISPs to act as forwarders to each other, so that
+ <span class="emphasis"><i class="EMPHASIS">your</i></span> users can
+ see the internal content of all ISPs.</p>
+
+ <p>Assume that host-a has a PPP connection to isp-a.example.net. And
+ host-b has a PPP connection to isp-b.example.org. Both run
+ <span class="APPLICATION">Privoxy</span>. Their forwarding
+ configuration can look like this:</p>
+
+ <p>host-a:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="100%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ forward / .
+ forward .isp-b.example.net host-b:8118
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>host-b:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="100%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ forward / .
+ forward .isp-a.example.org host-a:8118
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>Now, your users can set their browser's proxy to use either host-a
+ or host-b and be able to browse the internal content of both isp-a
+ and isp-b.</p>
+
+ <p>If you intend to chain <span class="APPLICATION">Privoxy</span>
+ and <span class="APPLICATION">squid</span> locally, then chaining as
+ <tt class="LITERAL">browser -> squid -> privoxy</tt> is the
+ recommended way.</p>
+
+ <p>Assuming that <span class="APPLICATION">Privoxy</span> and
+ <span class="APPLICATION">squid</span> run on the same box, your
+ <span class="APPLICATION">squid</span> configuration could then look
+ like this:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="100%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ # Define Privoxy as parent proxy (without ICP)
+ cache_peer 127.0.0.1 parent 8118 7 no-query
+
+ # Define ACL for protocol FTP
+ acl ftp proto FTP
+
+ # Do not forward FTP requests to Privoxy
+ always_direct allow ftp
+
+ # Forward all the rest to Privoxy
+ never_direct allow all
+</pre>
+ </td>
+ </tr>
+ </table>
+
+ <p>You would then need to change your browser's proxy settings to
+ <span class="APPLICATION">squid</span>'s address and port. Squid
+ normally uses port 3128. If unsure consult <tt class=
+ "LITERAL">http_port</tt> in <tt class="FILENAME">squid.conf</tt>.</p>
+
+ <p>You could just as well decide to only forward requests you suspect
+ of leading to Windows executables through a virus-scanning parent
+ proxy, say, on <tt class="LITERAL">antivir.example.com</tt>, port
+ 8010:</p>
+
+ <table border="0" bgcolor="#E0E0E0" width="100%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ forward / .
+ forward /.*\.(exe|com|dll|zip)$ antivir.example.com:8010
+</pre>
+ </td>
+ </tr>
+ </table>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="FORWARDED-CONNECT-RETRIES" id=
+ "FORWARDED-CONNECT-RETRIES">7.5.4. forwarded-connect-retries</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>How often Privoxy retries if a forwarded connection request
+ fails.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>Number of retries.</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class="EMPHASIS">0</i></span></p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Connections forwarded through other proxies are treated like
+ direct connections and no retry attempts are made.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p><tt class=
+ "REPLACEABLE"><i>forwarded-connect-retries</i></tt> is mainly
+ interesting for socks4a connections, where <span class=
+ "APPLICATION">Privoxy</span> can't detect why the connections
+ failed. The connection might have failed because of a DNS
+ timeout in which case a retry makes sense, but it might also
+ have failed because the server doesn't exist or isn't
+ reachable. In this case the retry will just delay the
+ appearance of Privoxy's error message.</p>
+
+ <p>Note that in the context of this option, <span class=
+ "QUOTE">"forwarded connections"</span> includes all connections
+ that Privoxy forwards through other proxies. This option is not
+ limited to the HTTP CONNECT method.</p>
+
+ <p>Only use this option, if you are getting lots of
+ forwarding-related error messages that go away when you try
+ again manually. Start with a small value and check Privoxy's
+ logfile from time to time, to see how many retries are usually
+ needed.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>forwarded-connect-retries 1</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+ </div>
+
+ <div class="SECT2">
+ <h2 class="SECT2"><a name="MISC" id="MISC">7.6. Miscellaneous</a></h2>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="ACCEPT-INTERCEPTED-REQUESTS" id=
+ "ACCEPT-INTERCEPTED-REQUESTS">7.6.1.
+ accept-intercepted-requests</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Whether intercepted requests should be treated as valid.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>0 or 1</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
- # Do not forward FTP requests to Privoxy
- always_direct allow ftp
+ <dd>
+ <p><span class="emphasis"><i class="EMPHASIS">0</i></span></p>
+ </dd>
- # Forward all the rest to Privoxy
- never_direct allow all</PRE
-></TD
-></TR
-></TABLE
-></P
-><P
-> You would then need to change your browser's proxy settings to <SPAN
-CLASS="APPLICATION"
->squid</SPAN
->'s address and port.
- Squid normally uses port 3128. If unsure consult <TT
-CLASS="LITERAL"
->http_port</TT
-> in <TT
-CLASS="FILENAME"
->squid.conf</TT
->.</P
-><P
-> You could just as well decide to only forward requests you suspect
- of leading to Windows executables through a virus-scanning parent proxy,
- say, on <TT
-CLASS="LITERAL"
->antivir.example.com</TT
->, port 8010:</P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="100%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> forward / .
- forward /.*\.(exe|com|dll|zip)$ antivir.example.com:8010</PRE
-></TD
-></TR
-></TABLE
-> </P
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="FORWARDED-CONNECT-RETRIES"
->7.5.4. forwarded-connect-retries</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> How often Privoxy retries if a forwarded connection request fails.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
-> <TT
-CLASS="REPLACEABLE"
-><I
->Number of retries.</I
-></TT
->
- </P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->0</I
-></SPAN
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> Connections forwarded through other proxies are treated like direct connections and no retry attempts are made.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> <TT
-CLASS="REPLACEABLE"
-><I
->forwarded-connect-retries</I
-></TT
-> is mainly interesting
- for socks4a connections, where <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> can't detect why the connections failed.
- The connection might have failed because of a DNS timeout in which case a retry makes sense,
- but it might also have failed because the server doesn't exist or isn't reachable. In this
- case the retry will just delay the appearance of Privoxy's error message.
- </P
-><P
-> Note that in the context of this option, <SPAN
-CLASS="QUOTE"
->"forwarded connections"</SPAN
-> includes all connections
- that Privoxy forwards through other proxies. This option is not limited to the HTTP CONNECT method.
- </P
-><P
-> Only use this option, if you are getting lots of forwarding-related error messages
- that go away when you try again manually. Start with a small value and check Privoxy's
- logfile from time to time, to see how many retries are usually needed.
- </P
-></DD
-><DT
->Examples:</DT
-><DD
-><P
-> forwarded-connect-retries 1
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="ACCEPT-INTERCEPTED-REQUESTS"
->7.5.5. accept-intercepted-requests</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Whether intercepted requests should be treated as valid.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
-> <TT
-CLASS="REPLACEABLE"
-><I
->0 or 1</I
-></TT
->
- </P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->0</I
-></SPAN
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> Only proxy requests are accepted, intercepted requests are treated as invalid.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> If you don't trust your clients and want to force them
- to use <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->, enable this
- option and configure your packet filter to redirect outgoing
- HTTP connections into <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->.
- </P
-><P
-> Make sure that <SPAN
-CLASS="APPLICATION"
->Privoxy's</SPAN
-> own requests
- aren't redirected as well. Additionally take care that
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> can't intentionally connect
- to itself, otherwise you could run into redirection loops if
- <SPAN
-CLASS="APPLICATION"
->Privoxy's</SPAN
-> listening port is reachable
- by the outside or an attacker has access to the pages you visit.
- </P
-></DD
-><DT
->Examples:</DT
-><DD
-><P
-> accept-intercepted-requests 1
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="ALLOW-CGI-REQUEST-CRUNCHING"
->7.5.6. allow-cgi-request-crunching</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Whether requests to <SPAN
-CLASS="APPLICATION"
->Privoxy's</SPAN
-> CGI pages can be blocked or redirected.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
-> <TT
-CLASS="REPLACEABLE"
-><I
->0 or 1</I
-></TT
->
- </P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->0</I
-></SPAN
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> ignores block and redirect actions for its CGI pages.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> By default <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> ignores block or redirect actions
- for its CGI pages. Intercepting these requests can be useful in multi-user
- setups to implement fine-grained access control, but it can also render the complete
- web interface useless and make debugging problems painful if done without care.
- </P
-><P
-> Don't enable this option unless you're sure that you really need it.
- </P
-></DD
-><DT
->Examples:</DT
-><DD
-><P
-> allow-cgi-request-crunching 1
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="SPLIT-LARGE-FORMS"
->7.5.7. split-large-forms</A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Specifies:</DT
-><DD
-><P
-> Whether the CGI interface should stay compatible with broken HTTP clients.
- </P
-></DD
-><DT
->Type of value:</DT
-><DD
-><P
-> <TT
-CLASS="REPLACEABLE"
-><I
->0 or 1</I
-></TT
->
- </P
-></DD
-><DT
->Default value:</DT
-><DD
-><P
-><SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->0</I
-></SPAN
-></P
-></DD
-><DT
->Effect if unset:</DT
-><DD
-><P
-> The CGI form generate long GET URLs.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> <SPAN
-CLASS="APPLICATION"
->Privoxy's</SPAN
-> CGI forms can lead to
- rather long URLs. This isn't a problem as far as the HTTP
- standard is concerned, but it can confuse clients with arbitrary
- URL length limitations.
- </P
-><P
-> Enabling split-large-forms causes <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->
- to divide big forms into smaller ones to keep the URL length down.
- It makes editing a lot less convenient and you can no longer
- submit all changes at once, but at least it works around this
- browser bug.
- </P
-><P
-> If you don't notice any editing problems, there is no reason
- to enable this option, but if one of the submit buttons appears
- to be broken, you should give it a try.
- </P
-></DD
-><DT
->Examples:</DT
-><DD
-><P
-> split-large-forms 1
- </P
-></DD
-></DL
-></DIV
-></DIV
-></DIV
-><DIV
-CLASS="SECT2"
-><H2
-CLASS="SECT2"
-><A
-NAME="WINDOWS-GUI"
->7.6. Windows GUI Options</A
-></H2
-><P
-> <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> has a number of options specific to the
- Windows GUI interface:</P
-><A
-NAME="ACTIVITY-ANIMATION"
-></A
-><P
-> If <SPAN
-CLASS="QUOTE"
->"activity-animation"</SPAN
-> is set to 1, the
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> icon will animate when
- <SPAN
-CLASS="QUOTE"
->"Privoxy"</SPAN
-> is active. To turn off, set to 0.</P
-><P
-> <TT
-CLASS="LITERAL"
-> <P
-CLASS="LITERALLAYOUT"
-> <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->activity-animation 1</I
-></SPAN
-><br>
- </P
->
- </TT
-></P
-><A
-NAME="LOG-MESSAGES"
-></A
-><P
-> If <SPAN
-CLASS="QUOTE"
->"log-messages"</SPAN
-> is set to 1,
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> will log messages to the console
- window:</P
-><P
-> <TT
-CLASS="LITERAL"
-> <P
-CLASS="LITERALLAYOUT"
-> <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->log-messages 1</I
-></SPAN
-><br>
- </P
->
- </TT
-></P
-><A
-NAME="LOG-BUFFER-SIZE"
-></A
-><P
->
- If <SPAN
-CLASS="QUOTE"
->"log-buffer-size"</SPAN
-> is set to 1, the size of the log buffer,
- i.e. the amount of memory used for the log messages displayed in the
- console window, will be limited to <SPAN
-CLASS="QUOTE"
->"log-max-lines"</SPAN
-> (see below).</P
-><P
-> Warning: Setting this to 0 will result in the buffer to grow infinitely and
- eat up all your memory!</P
-><P
-> <TT
-CLASS="LITERAL"
-> <P
-CLASS="LITERALLAYOUT"
-> <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->log-buffer-size 1</I
-></SPAN
-><br>
- </P
->
- </TT
-></P
-><A
-NAME="LOG-MAX-LINES"
-></A
-><P
-> <SPAN
-CLASS="APPLICATION"
->log-max-lines</SPAN
-> is the maximum number of lines held
- in the log buffer. See above.</P
-><P
-> <TT
-CLASS="LITERAL"
-> <P
-CLASS="LITERALLAYOUT"
-> <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->log-max-lines 200</I
-></SPAN
-><br>
- </P
->
- </TT
-></P
-><A
-NAME="LOG-HIGHLIGHT-MESSAGES"
-></A
-><P
-> If <SPAN
-CLASS="QUOTE"
->"log-highlight-messages"</SPAN
-> is set to 1,
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> will highlight portions of the log
- messages with a bold-faced font:</P
-><P
-> <TT
-CLASS="LITERAL"
-> <P
-CLASS="LITERALLAYOUT"
-> <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->log-highlight-messages 1</I
-></SPAN
-><br>
- </P
->
- </TT
-></P
-><A
-NAME="LOG-FONT-NAME"
-></A
-><P
-> The font used in the console window:</P
-><P
-> <TT
-CLASS="LITERAL"
-> <P
-CLASS="LITERALLAYOUT"
-> <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->log-font-name Comic Sans MS</I
-></SPAN
-><br>
- </P
->
- </TT
-></P
-><A
-NAME="LOG-FONT-SIZE"
-></A
-><P
-> Font size used in the console window:</P
-><P
-> <TT
-CLASS="LITERAL"
-> <P
-CLASS="LITERALLAYOUT"
-> <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->log-font-size 8</I
-></SPAN
-><br>
- </P
->
- </TT
-></P
-><A
-NAME="SHOW-ON-TASK-BAR"
-></A
-><P
->
- <SPAN
-CLASS="QUOTE"
->"show-on-task-bar"</SPAN
-> controls whether or not
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> will appear as a button on the Task bar
- when minimized:</P
-><P
-> <TT
-CLASS="LITERAL"
-> <P
-CLASS="LITERALLAYOUT"
-> <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->show-on-task-bar 0</I
-></SPAN
-><br>
- </P
->
- </TT
-></P
-><A
-NAME="CLOSE-BUTTON-MINIMIZES"
-></A
-><P
-> If <SPAN
-CLASS="QUOTE"
->"close-button-minimizes"</SPAN
-> is set to 1, the Windows close
- button will minimize <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> instead of closing
- the program (close with the exit option on the File menu).</P
-><P
-> <TT
-CLASS="LITERAL"
-> <P
-CLASS="LITERALLAYOUT"
-> <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->close-button-minimizes 1</I
-></SPAN
-><br>
- </P
->
- </TT
-></P
-><A
-NAME="HIDE-CONSOLE"
-></A
-><P
-> The <SPAN
-CLASS="QUOTE"
->"hide-console"</SPAN
-> option is specific to the MS-Win console
- version of <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->. If this option is used,
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> will disconnect from and hide the
- command console.</P
-><P
-> <TT
-CLASS="LITERAL"
-> <P
-CLASS="LITERALLAYOUT"
-> #<SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->hide-console</I
-></SPAN
-><br>
- </P
->
- </TT
-></P
-></DIV
-></DIV
-><DIV
-CLASS="NAVFOOTER"
-><HR
-ALIGN="LEFT"
-WIDTH="100%"><TABLE
-SUMMARY="Footer navigation table"
-WIDTH="100%"
-BORDER="0"
-CELLPADDING="0"
-CELLSPACING="0"
-><TR
-><TD
-WIDTH="33%"
-ALIGN="left"
-VALIGN="top"
-><A
-HREF="configuration.html"
-ACCESSKEY="P"
->Prev</A
-></TD
-><TD
-WIDTH="34%"
-ALIGN="center"
-VALIGN="top"
-><A
-HREF="index.html"
-ACCESSKEY="H"
->Home</A
-></TD
-><TD
-WIDTH="33%"
-ALIGN="right"
-VALIGN="top"
-><A
-HREF="actions-file.html"
-ACCESSKEY="N"
->Next</A
-></TD
-></TR
-><TR
-><TD
-WIDTH="33%"
-ALIGN="left"
-VALIGN="top"
->Privoxy Configuration</TD
-><TD
-WIDTH="34%"
-ALIGN="center"
-VALIGN="top"
-> </TD
-><TD
-WIDTH="33%"
-ALIGN="right"
-VALIGN="top"
->Actions Files</TD
-></TR
-></TABLE
-></DIV
-></BODY
-></HTML
->
\ No newline at end of file
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Only proxy requests are accepted, intercepted requests are
+ treated as invalid.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>If you don't trust your clients and want to force them to
+ use <span class="APPLICATION">Privoxy</span>, enable this
+ option and configure your packet filter to redirect outgoing
+ HTTP connections into <span class=
+ "APPLICATION">Privoxy</span>.</p>
+
+ <p>Note that intercepting encrypted connections (HTTPS) isn't
+ supported.</p>
+
+ <p>Make sure that <span class="APPLICATION">Privoxy's</span>
+ own requests aren't redirected as well. Additionally take care
+ that <span class="APPLICATION">Privoxy</span> can't
+ intentionally connect to itself, otherwise you could run into
+ redirection loops if <span class="APPLICATION">Privoxy's</span>
+ listening port is reachable by the outside or an attacker has
+ access to the pages you visit.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>accept-intercepted-requests 1</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="ALLOW-CGI-REQUEST-CRUNCHING" id=
+ "ALLOW-CGI-REQUEST-CRUNCHING">7.6.2.
+ allow-cgi-request-crunching</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Whether requests to <span class=
+ "APPLICATION">Privoxy's</span> CGI pages can be blocked or
+ redirected.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>0 or 1</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class="EMPHASIS">0</i></span></p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p><span class="APPLICATION">Privoxy</span> ignores block and
+ redirect actions for its CGI pages.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>By default <span class="APPLICATION">Privoxy</span> ignores
+ block or redirect actions for its CGI pages. Intercepting these
+ requests can be useful in multi-user setups to implement
+ fine-grained access control, but it can also render the
+ complete web interface useless and make debugging problems
+ painful if done without care.</p>
+
+ <p>Don't enable this option unless you're sure that you really
+ need it.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>allow-cgi-request-crunching 1</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="SPLIT-LARGE-FORMS" id=
+ "SPLIT-LARGE-FORMS">7.6.3. split-large-forms</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Whether the CGI interface should stay compatible with broken
+ HTTP clients.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>0 or 1</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p><span class="emphasis"><i class="EMPHASIS">0</i></span></p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>The CGI form generate long GET URLs.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p><span class="APPLICATION">Privoxy's</span> CGI forms can
+ lead to rather long URLs. This isn't a problem as far as the
+ HTTP standard is concerned, but it can confuse clients with
+ arbitrary URL length limitations.</p>
+
+ <p>Enabling split-large-forms causes <span class=
+ "APPLICATION">Privoxy</span> to divide big forms into smaller
+ ones to keep the URL length down. It makes editing a lot less
+ convenient and you can no longer submit all changes at once,
+ but at least it works around this browser bug.</p>
+
+ <p>If you don't notice any editing problems, there is no reason
+ to enable this option, but if one of the submit buttons appears
+ to be broken, you should give it a try.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>split-large-forms 1</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="KEEP-ALIVE-TIMEOUT" id=
+ "KEEP-ALIVE-TIMEOUT">7.6.4. keep-alive-timeout</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Number of seconds after which an open connection will no
+ longer be reused.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>Time in seconds.</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>None</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Connections are not kept alive.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>This option allows clients to keep the connection to
+ <span class="APPLICATION">Privoxy</span> alive. If the server
+ supports it, <span class="APPLICATION">Privoxy</span> will keep
+ the connection to the server alive as well. Under certain
+ circumstances this may result in speed-ups.</p>
+
+ <p>By default, <span class="APPLICATION">Privoxy</span> will
+ close the connection to the server if the client connection
+ gets closed, or if the specified timeout has been reached
+ without a new request coming in. This behaviour can be changed
+ with the <a href="#CONNECTION-SHARING" target=
+ "_top">connection-sharing</a> option.</p>
+
+ <p>This option has no effect if <span class=
+ "APPLICATION">Privoxy</span> has been compiled without
+ keep-alive support.</p>
+
+ <p>Note that a timeout of five seconds as used in the default
+ configuration file significantly decreases the number of
+ connections that will be reused. The value is used because some
+ browsers limit the number of connections they open to a single
+ host and apply the same limit to proxies. This can result in a
+ single website <span class="QUOTE">"grabbing"</span> all the
+ connections the browser allows, which means connections to
+ other websites can't be opened until the connections currently
+ in use time out.</p>
+
+ <p>Several users have reported this as a Privoxy bug, so the
+ default value has been reduced. Consider increasing it to 300
+ seconds or even more if you think your browser can handle it.
+ If your browser appears to be hanging, it probably can't.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>keep-alive-timeout 300</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="TOLERATE-PIPELINING" id=
+ "TOLERATE-PIPELINING">7.6.5. tolerate-pipelining</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Whether or not pipelined requests should be served.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>0 or 1.</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>None</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>If Privoxy receives more than one request at once, it
+ terminates the client connection after serving the first
+ one.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p><span class="APPLICATION">Privoxy</span> currently doesn't
+ pipeline outgoing requests, thus allowing pipelining on the
+ client connection is not guaranteed to improve the
+ performance.</p>
+
+ <p>By default <span class="APPLICATION">Privoxy</span> tries to
+ discourage clients from pipelining by discarding aggressively
+ pipelined requests, which forces the client to resend them
+ through a new connection.</p>
+
+ <p>This option lets <span class="APPLICATION">Privoxy</span>
+ tolerate pipelining. Whether or not that improves performance
+ mainly depends on the client configuration.</p>
+
+ <p>If you are seeing problems with pages not properly loading,
+ disabling this option could work around the problem.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>tolerate-pipelining 1</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="DEFAULT-SERVER-TIMEOUT" id=
+ "DEFAULT-SERVER-TIMEOUT">7.6.6. default-server-timeout</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Assumed server-side keep-alive timeout if not specified by
+ the server.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>Time in seconds.</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>None</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Connections for which the server didn't specify the
+ keep-alive timeout are not reused.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>Enabling this option significantly increases the number of
+ connections that are reused, provided the <a href=
+ "#KEEP-ALIVE-TIMEOUT" target="_top">keep-alive-timeout</a>
+ option is also enabled.</p>
+
+ <p>While it also increases the number of connections problems
+ when <span class="APPLICATION">Privoxy</span> tries to reuse a
+ connection that already has been closed on the server side, or
+ is closed while <span class="APPLICATION">Privoxy</span> is
+ trying to reuse it, this should only be a problem if it happens
+ for the first request sent by the client. If it happens for
+ requests on reused client connections, <span class=
+ "APPLICATION">Privoxy</span> will simply close the connection
+ and the client is supposed to retry the request without
+ bothering the user.</p>
+
+ <p>Enabling this option is therefore only recommended if the
+ <a href="#CONNECTION-SHARING" target=
+ "_top">connection-sharing</a> option is disabled.</p>
+
+ <p>It is an error to specify a value larger than the <a href=
+ "#KEEP-ALIVE-TIMEOUT" target="_top">keep-alive-timeout</a>
+ value.</p>
+
+ <p>This option has no effect if <span class=
+ "APPLICATION">Privoxy</span> has been compiled without
+ keep-alive support.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>default-server-timeout 60</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="CONNECTION-SHARING" id=
+ "CONNECTION-SHARING">7.6.7. connection-sharing</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Whether or not outgoing connections that have been kept
+ alive should be shared between different incoming
+ connections.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>0 or 1</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>None</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Connections are not shared.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>This option has no effect if <span class=
+ "APPLICATION">Privoxy</span> has been compiled without
+ keep-alive support, or if it's disabled.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>Note that reusing connections doesn't necessary cause
+ speedups. There are also a few privacy implications you should
+ be aware of.</p>
+
+ <p>If this option is effective, outgoing connections are shared
+ between clients (if there are more than one) and closing the
+ browser that initiated the outgoing connection does no longer
+ affect the connection between <span class=
+ "APPLICATION">Privoxy</span> and the server unless the client's
+ request hasn't been completed yet.</p>
+
+ <p>If the outgoing connection is idle, it will not be closed
+ until either <span class="APPLICATION">Privoxy's</span> or the
+ server's timeout is reached. While it's open, the server knows
+ that the system running <span class=
+ "APPLICATION">Privoxy</span> is still there.</p>
+
+ <p>If there are more than one client (maybe even belonging to
+ multiple users), they will be able to reuse each others
+ connections. This is potentially dangerous in case of
+ authentication schemes like NTLM where only the connection is
+ authenticated, instead of requiring authentication for each
+ request.</p>
+
+ <p>If there is only a single client, and if said client can
+ keep connections alive on its own, enabling this option has
+ next to no effect. If the client doesn't support connection
+ keep-alive, enabling this option may make sense as it allows
+ <span class="APPLICATION">Privoxy</span> to keep outgoing
+ connections alive even if the client itself doesn't support
+ it.</p>
+
+ <p>You should also be aware that enabling this option increases
+ the likelihood of getting the "No server or forwarder data"
+ error message, especially if you are using a slow connection to
+ the Internet.</p>
+
+ <p>This option should only be used by experienced users who
+ understand the risks and can weight them against the
+ benefits.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>connection-sharing 1</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="SOCKET-TIMEOUT" id="SOCKET-TIMEOUT">7.6.8.
+ socket-timeout</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Number of seconds after which a socket times out if no data
+ is received.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>Time in seconds.</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>None</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>A default value of 300 seconds is used.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>The default is quite high and you probably want to reduce
+ it. If you aren't using an occasionally slow proxy like Tor,
+ reducing it to a few seconds should be fine.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>socket-timeout 300</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="MAX-CLIENT-CONNECTIONS" id=
+ "MAX-CLIENT-CONNECTIONS">7.6.9. max-client-connections</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Maximum number of client connections that will be
+ served.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>Positive number.</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>128</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Connections are served until a resource limit is
+ reached.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p><span class="APPLICATION">Privoxy</span> creates one thread
+ (or process) for every incoming client connection that isn't
+ rejected based on the access control settings.</p>
+
+ <p>If the system is powerful enough, <span class=
+ "APPLICATION">Privoxy</span> can theoretically deal with
+ several hundred (or thousand) connections at the same time, but
+ some operating systems enforce resource limits by shutting down
+ offending processes and their default limits may be below the
+ ones <span class="APPLICATION">Privoxy</span> would require
+ under heavy load.</p>
+
+ <p>Configuring <span class="APPLICATION">Privoxy</span> to
+ enforce a connection limit below the thread or process limit
+ used by the operating system makes sure this doesn't happen.
+ Simply increasing the operating system's limit would work too,
+ but if <span class="APPLICATION">Privoxy</span> isn't the only
+ application running on the system, you may actually want to
+ limit the resources used by <span class=
+ "APPLICATION">Privoxy</span>.</p>
+
+ <p>If <span class="APPLICATION">Privoxy</span> is only used by
+ a single trusted user, limiting the number of client
+ connections is probably unnecessary. If there are multiple
+ possibly untrusted users you probably still want to
+ additionally use a packet filter to limit the maximal number of
+ incoming connections per client. Otherwise a malicious user
+ could intentionally create a high number of connections to
+ prevent other users from using <span class=
+ "APPLICATION">Privoxy</span>.</p>
+
+ <p>Obviously using this option only makes sense if you choose a
+ limit below the one enforced by the operating system.</p>
+
+ <p>One most POSIX-compliant systems <span class=
+ "APPLICATION">Privoxy</span> can't properly deal with more than
+ FD_SETSIZE file descriptors at the same time and has to reject
+ connections if the limit is reached. This will likely change in
+ a future version, but currently this limit can't be increased
+ without recompiling <span class="APPLICATION">Privoxy</span>
+ with a different FD_SETSIZE limit.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <p>max-client-connections 256</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="HANDLE-AS-EMPTY-DOC-RETURNS-OK" id=
+ "HANDLE-AS-EMPTY-DOC-RETURNS-OK">7.6.10.
+ handle-as-empty-doc-returns-ok</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>The status code Privoxy returns for pages blocked with
+ <tt class="LITERAL"><a href=
+ "actions-file.html#HANDLE-AS-EMPTY-DOCUMENT" target=
+ "_top">+handle-as-empty-document</a></tt>.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>0 or 1</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>0</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Privoxy returns a status 403(forbidden) for all blocked
+ pages.</p>
+ </dd>
+
+ <dt>Effect if set:</dt>
+
+ <dd>
+ <p>Privoxy returns a status 200(OK) for pages blocked with
+ +handle-as-empty-document and a status 403(Forbidden) for all
+ other blocked pages.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>This directive was added as a work-around for Firefox bug
+ 492459: <span class="QUOTE">"Websites are no longer rendered if
+ SSL requests for JavaScripts are blocked by a proxy."</span>
+ (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=492459"
+ target=
+ "_top">https://bugzilla.mozilla.org/show_bug.cgi?id=492459</a>),
+ the bug has been fixed for quite some time, but this directive
+ is also useful to make it harder for websites to detect whether
+ or not resources are being blocked.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="ENABLE-COMPRESSION" id=
+ "ENABLE-COMPRESSION">7.6.11. enable-compression</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>Whether or not buffered content is compressed before
+ delivery.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>0 or 1</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>0</p>
+ </dd>
+
+ <dt>Effect if unset:</dt>
+
+ <dd>
+ <p>Privoxy does not compress buffered content.</p>
+ </dd>
+
+ <dt>Effect if set:</dt>
+
+ <dd>
+ <p>Privoxy compresses buffered content before delivering it to
+ the client, provided the client supports it.</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>This directive is only supported if Privoxy has been
+ compiled with FEATURE_COMPRESSION, which should not to be
+ confused with FEATURE_ZLIB.</p>
+
+ <p>Compressing buffered content is mainly useful if Privoxy and
+ the client are running on different systems. If they are
+ running on the same system, enabling compression is likely to
+ slow things down. If you didn't measure otherwise, you should
+ assume that it does and keep this option disabled.</p>
+
+ <p>Privoxy will not compress buffered content below a certain
+ length.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="COMPRESSION-LEVEL" id=
+ "COMPRESSION-LEVEL">7.6.12. compression-level</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>The compression level that is passed to the zlib library
+ when compressing buffered content.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>Positive number ranging from 0 to
+ 9.</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>1</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>Compressing the data more takes usually longer than
+ compressing it less or not compressing it at all. Which level
+ is best depends on the connection between Privoxy and the
+ client. If you can't be bothered to benchmark it for yourself,
+ you should stick with the default and keep compression
+ disabled.</p>
+
+ <p>If compression is disabled, the compression level is
+ irrelevant.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ # Best speed (compared to the other levels)
+ compression-level 1
+ # Best compression
+ compression-level 9
+ # No compression. Only useful for testing as the added header
+ # slightly increases the amount of data that has to be sent.
+ # If your benchmark shows that using this compression level
+ # is superior to using no compression at all, the benchmark
+ # is likely to be flawed.
+ compression-level 0
+
+</pre>
+ </td>
+ </tr>
+ </table>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="CLIENT-HEADER-ORDER" id=
+ "CLIENT-HEADER-ORDER">7.6.13. client-header-order</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>The order in which client headers are sorted before
+ forwarding them.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>Client header names delimited by
+ spaces or tabs</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>None</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <p>By default <span class="APPLICATION">Privoxy</span> leaves
+ the client headers in the order they were sent by the client.
+ Headers are modified in-place, new headers are added at the end
+ of the already existing headers.</p>
+
+ <p>The header order can be used to fingerprint client requests
+ independently of other headers like the User-Agent.</p>
+
+ <p>This directive allows to sort the headers differently to
+ better mimic a different User-Agent. Client headers will be
+ emitted in the order given, headers whose name isn't explicitly
+ specified are added at the end.</p>
+
+ <p>Note that sorting headers in an uncommon way will make
+ fingerprinting actually easier. Encrypted headers are not
+ affected by this directive.</p>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="CLIENT-SPECIFIC-TAG" id=
+ "CLIENT-SPECIFIC-TAG">7.6.14. client-specific-tag</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>The name of a tag that will always be set for clients that
+ requested it through the webinterface.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>Tag name followed by a
+ description that will be shown in the webinterface</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>None</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <div class="WARNING">
+ <table class="WARNING" border="1" width="90%">
+ <tr>
+ <td align="center"><b>Warning</b></td>
+ </tr>
+
+ <tr>
+ <td align="left">
+ <p>This is an experimental feature. The syntax is
+ likely to change in future versions.</p>
+ </td>
+ </tr>
+ </table>
+ </div>
+
+ <p>Client-specific tags allow Privoxy admins to create
+ different profiles and let the users chose which one they want
+ without impacting other users.</p>
+
+ <p>One use case is allowing users to circumvent certain blocks
+ without having to allow them to circumvent all blocks. This is
+ not possible with the <a href=
+ "config.html#ENABLE-REMOTE-TOGGLE">enable-remote-toggle
+ feature</a> because it would bluntly disable all blocks for all
+ users and also affect other actions like filters. It also is
+ set globally which renders it useless in most multi-user
+ setups.</p>
+
+ <p>After a client-specific tag has been defined with the
+ client-specific-tag directive, action sections can be activated
+ based on the tag by using a <a href=
+ "actions-file.html#CLIENT-TAG-PATTERN" target=
+ "_top">CLIENT-TAG</a> pattern. The CLIENT-TAG pattern is
+ evaluated at the same priority as URL patterns, as a result the
+ last matching pattern wins. Tags that are created based on
+ client or server headers are evaluated later on and can
+ overrule CLIENT-TAG and URL patterns!</p>
+
+ <p>The tag is set for all requests that come from clients that
+ requested it to be set. Note that "clients" are differentiated
+ by IP address, if the IP address changes the tag has to be
+ requested again.</p>
+
+ <p>Clients can request tags to be set by using the CGI
+ interface <a href="http://config.privoxy.org/show-client-tags"
+ target="_top">http://config.privoxy.org/show-client-tags</a>.
+ The specific tag description is only used on the web page and
+ should be phrased in away that the user understand the effect
+ of the tag.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ # Define a couple of tags, the described effect requires action sections
+ # that are enabled based on CLIENT-TAG patterns.
+ client-specific-tag circumvent-blocks Overrule blocks but do not affect other actions
+ disable-content-filters Disable content-filters but do not affect other actions
+
+</pre>
+ </td>
+ </tr>
+ </table>
+ </dd>
+ </dl>
+ </div>
+ </div>
+
+ <div class="SECT3">
+ <h4 class="SECT3"><a name="CLIENT-TAG-LIFETIME" id=
+ "CLIENT-TAG-LIFETIME">7.6.15. client-tag-lifetime</a></h4>
+
+ <div class="VARIABLELIST">
+ <dl>
+ <dt>Specifies:</dt>
+
+ <dd>
+ <p>How long a temporarily enabled tag remains enabled.</p>
+ </dd>
+
+ <dt>Type of value:</dt>
+
+ <dd>
+ <p><tt class="REPLACEABLE"><i>Time in seconds.</i></tt></p>
+ </dd>
+
+ <dt>Default value:</dt>
+
+ <dd>
+ <p>60</p>
+ </dd>
+
+ <dt>Notes:</dt>
+
+ <dd>
+ <div class="WARNING">
+ <table class="WARNING" border="1" width="90%">
+ <tr>
+ <td align="center"><b>Warning</b></td>
+ </tr>
+
+ <tr>
+ <td align="left">
+ <p>This is an experimental feature. The syntax is
+ likely to change in future versions.</p>
+ </td>
+ </tr>
+ </table>
+ </div>
+
+ <p>In case of some tags users may not want to enable them
+ permanently, but only for a short amount of time, for example
+ to circumvent a block that is the result of an overly-broad URL
+ pattern.</p>
+
+ <p>The CGI interface <a href=
+ "http://config.privoxy.org/show-client-tags" target=
+ "_top">http://config.privoxy.org/show-client-tags</a> therefore
+ provides a "enable this tag temporarily" option. If it is used,
+ the tag will be set until the client-tag-lifetime is over.</p>
+ </dd>
+
+ <dt>Examples:</dt>
+
+ <dd>
+ <table border="0" bgcolor="#E0E0E0" width="90%">
+ <tr>
+ <td>
+ <pre class="SCREEN">
+ # Increase the time to life for temporarily enabled tags to 3 minutes
+ client-tag-lifetime 180
+
+</pre>
+ </td>
+ </tr>
+ </table>
+ </dd>
+ </dl>
+ </div>
+ </div>
+ </div>
+
+ <div class="SECT2">
+ <h2 class="SECT2"><a name="WINDOWS-GUI" id="WINDOWS-GUI">7.7. Windows
+ GUI Options</a></h2>
+
+ <p><span class="APPLICATION">Privoxy</span> has a number of options
+ specific to the Windows GUI interface:</p><a name="ACTIVITY-ANIMATION"
+ id="ACTIVITY-ANIMATION"></a>
+
+ <p>If <span class="QUOTE">"activity-animation"</span> is set to 1, the
+ <span class="APPLICATION">Privoxy</span> icon will animate when
+ <span class="QUOTE">"Privoxy"</span> is active. To turn off, set to
+ 0.</p>
+
+ <p class="LITERALLAYOUT"><tt class="LITERAL"> <span class=
+ "emphasis"><i class="EMPHASIS">activity-animation 1</i></span><br>
+ </tt></p><a name="LOG-MESSAGES" id=
+ "LOG-MESSAGES"></a>
+
+ <p>If <span class="QUOTE">"log-messages"</span> is set to 1,
+ <span class="APPLICATION">Privoxy</span> copies log messages to the
+ console window. The log detail depends on the <a href=
+ "config.html#DEBUG">debug</a> directive.</p>
+
+ <p class="LITERALLAYOUT"><tt class="LITERAL"> <span class=
+ "emphasis"><i class="EMPHASIS">log-messages 1</i></span><br>
+ </tt></p><a name="LOG-BUFFER-SIZE" id=
+ "LOG-BUFFER-SIZE"></a>
+
+ <p>If <span class="QUOTE">"log-buffer-size"</span> is set to 1, the
+ size of the log buffer, i.e. the amount of memory used for the log
+ messages displayed in the console window, will be limited to
+ <span class="QUOTE">"log-max-lines"</span> (see below).</p>
+
+ <p>Warning: Setting this to 0 will result in the buffer to grow
+ infinitely and eat up all your memory!</p>
+
+ <p class="LITERALLAYOUT"><tt class="LITERAL"> <span class=
+ "emphasis"><i class="EMPHASIS">log-buffer-size 1</i></span><br>
+ </tt></p><a name="LOG-MAX-LINES" id=
+ "LOG-MAX-LINES"></a>
+
+ <p><span class="APPLICATION">log-max-lines</span> is the maximum number
+ of lines held in the log buffer. See above.</p>
+
+ <p class="LITERALLAYOUT"><tt class="LITERAL"> <span class=
+ "emphasis"><i class="EMPHASIS">log-max-lines 200</i></span><br>
+ </tt></p><a name="LOG-HIGHLIGHT-MESSAGES" id=
+ "LOG-HIGHLIGHT-MESSAGES"></a>
+
+ <p>If <span class="QUOTE">"log-highlight-messages"</span> is set to 1,
+ <span class="APPLICATION">Privoxy</span> will highlight portions of the
+ log messages with a bold-faced font:</p>
+
+ <p class="LITERALLAYOUT"><tt class="LITERAL"> <span class=
+ "emphasis"><i class="EMPHASIS">log-highlight-messages 1</i></span><br>
+ </tt></p><a name="LOG-FONT-NAME" id=
+ "LOG-FONT-NAME"></a>
+
+ <p>The font used in the console window:</p>
+
+ <p class="LITERALLAYOUT"><tt class="LITERAL"> <span class=
+ "emphasis"><i class="EMPHASIS">log-font-name Comic Sans
+ MS</i></span><br>
+ </tt></p><a name="LOG-FONT-SIZE" id=
+ "LOG-FONT-SIZE"></a>
+
+ <p>Font size used in the console window:</p>
+
+ <p class="LITERALLAYOUT"><tt class="LITERAL"> <span class=
+ "emphasis"><i class="EMPHASIS">log-font-size 8</i></span><br>
+ </tt></p><a name="SHOW-ON-TASK-BAR" id=
+ "SHOW-ON-TASK-BAR"></a>
+
+ <p><span class="QUOTE">"show-on-task-bar"</span> controls whether or
+ not <span class="APPLICATION">Privoxy</span> will appear as a button on
+ the Task bar when minimized:</p>
+
+ <p class="LITERALLAYOUT"><tt class="LITERAL"> <span class=
+ "emphasis"><i class="EMPHASIS">show-on-task-bar 0</i></span><br>
+ </tt></p><a name="CLOSE-BUTTON-MINIMIZES" id=
+ "CLOSE-BUTTON-MINIMIZES"></a>
+
+ <p>If <span class="QUOTE">"close-button-minimizes"</span> is set to 1,
+ the Windows close button will minimize <span class=
+ "APPLICATION">Privoxy</span> instead of closing the program (close with
+ the exit option on the File menu).</p>
+
+ <p class="LITERALLAYOUT"><tt class="LITERAL"> <span class=
+ "emphasis"><i class="EMPHASIS">close-button-minimizes 1</i></span><br>
+ </tt></p><a name="HIDE-CONSOLE" id=
+ "HIDE-CONSOLE"></a>
+
+ <p>The <span class="QUOTE">"hide-console"</span> option is specific to
+ the MS-Win console version of <span class="APPLICATION">Privoxy</span>.
+ If this option is used, <span class="APPLICATION">Privoxy</span> will
+ disconnect from and hide the command console.</p>
+
+ <p class="LITERALLAYOUT"><tt class="LITERAL"> #<span class=
+ "emphasis"><i class="EMPHASIS">hide-console</i></span><br>
+ </tt></p>
+ </div>
+ </div>
+
+ <div class="NAVFOOTER">
+ <hr align="left" width="100%">
+
+ <table summary="Footer navigation table" width="100%" border="0"
+ cellpadding="0" cellspacing="0">
+ <tr>
+ <td width="33%" align="left" valign="top"><a href=
+ "configuration.html" accesskey="P">Prev</a></td>
+
+ <td width="34%" align="center" valign="top"><a href="index.html"
+ accesskey="H">Home</a></td>
+
+ <td width="33%" align="right" valign="top"><a href=
+ "actions-file.html" accesskey="N">Next</a></td>
+ </tr>
+
+ <tr>
+ <td width="33%" align="left" valign="top">Privoxy Configuration</td>
+
+ <td width="34%" align="center" valign="top"> </td>
+
+ <td width="33%" align="right" valign="top">Actions Files</td>
+ </tr>
+ </table>
+ </div>
+</body>
+</html>
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