<!--
- File : $Source: /cvsroot/ijbswa/current/doc/source/p-config.sgml,v $
+ File : doc/source/p-config.sgml
Purpose : Used with other docs and files only.
- $Id: p-config.sgml,v 2.2 2002/09/05 05:45:30 hal9 Exp $
-
- Copyright (C) 2001, 2002 Privoxy Developers <developers@privoxy.org>
+ Copyright (C) 2001-2019 Privoxy Developers https://www.privoxy.org/
See LICENSE.
========================================================================
- NOTE: Please read developer-manual/documentation.html before touching
+ NOTE: Please read developer-manual/documentation.html before touching
anything in this, or other Privoxy documentation.
========================================================================
-
- This file contains all the config file comments and options. It used to
+
+ This file contains all the config file comments and options. It used to
build both the user-manual config sections, and all of config (yes, the main
config file) itself.
- Rationale: This is broken up into two files since a file with a prolog
+ Rationale: This is broken up into two files since a file with a prolog
(DTD, etc) cannot be sourced as a secondary file. config.sgml is basically
a wrapper for this file.
IMPORTANT:
- OPTIONS: The actual options are included in this file and prefixed with
- '@@', and processed by the Makefile to strip the '@@'. Default options
- that should appear commented out should be listed as: '@@#OPTION'.
+ OPTIONS: The actual options are included in this file and prefixed with
+ '@@', and processed by the Makefile to strip the '@@'. Default options
+ that should appear commented out should be listed as: '@@#OPTION'.
Otherwise, as '@@OPTION'. Example:
@@listen-address 127.0.0.1:8118
- The Makefile does significant other processing too. The final results
- should be checked to make sure that the perl processing does not
+ The Makefile does significant other processing too. The final results
+ should be checked to make sure that the perl processing does not
fubar something!!! Makefile processing requires w3m, fmt (shell line
formatter), and perl.
-
+
This file is included into:
<title>The Main Configuration File</title>
<para>
- Again, the main configuration file is named <filename>config</filename> on
- Linux/Unix/BSD and OS/2, and <filename>config.txt</filename> on Windows.
+ By default, the main configuration file is named <filename>config</filename>,
+ with the exception of Windows, where it is named <filename>config.txt</filename>.
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:
</para>
-<para>
- <literal>
- <msgtext>
- <literallayout>
- <emphasis>confdir /etc/privoxy</emphasis></literallayout>
- </msgtext>
- </literal>
-</para>
+<literallayout>
+ <emphasis>confdir /etc/privoxy</emphasis>
+</literallayout>
<para>
Assigns the value <literal>/etc/privoxy</literal> to the option
<para>
The main config file controls all aspects of <application>Privoxy</application>'s
operation that are not location dependent (i.e. they apply universally, no matter
- where you may be surfing).
+ 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.
</para>
]]>
<sect1 id="config">
<title>
@@TITLE<!-- between the @@ is stripped by Makefile -->@@
- Sample Configuration File for Privoxy v&p-version;
+ Sample Configuration File for Privoxy &p-version;
</title>
<para>
- $Id: p-config.sgml,v 2.2 2002/09/05 05:45:30 hal9 Exp $
-</para>
-<para>
-Copyright (C) 2001, 2002 Privoxy Developers http://privoxy.org
+Copyright (C) 2001-2019 Privoxy Developers https://www.privoxy.org/
</para>
+<literallayout>
+##################################################################
+ #
+ Table of Contents #
+ #
+ I. INTRODUCTION #
+ II. FORMAT OF THE CONFIGURATION FILE #
+ #
+ 1. LOCAL SET-UP DOCUMENTATION #
+ 2. CONFIGURATION AND LOG FILE LOCATIONS #
+ 3. DEBUGGING #
+ 4. ACCESS CONTROL AND SECURITY #
+ 5. FORWARDING #
+ 6. MISCELLANEOUS #
+ 7. TLS #
+ 8. WINDOWS GUI OPTIONS #
+ #
+##################################################################
+
+
+I. INTRODUCTION
+ ===============
+</literallayout>
+
<para>
- <literallayout>
-#################################################################
- #
- Table of Contents #
- #
- I. INTRODUCTION #
- II. FORMAT OF THE CONFIGURATION FILE #
- #
- 1. CONFIGURATION AND LOG FILE LOCATIONS #
- 2. LOCAL SET-UP DOCUMENTATION #
- 3. DEBUGGING #
- 4. ACCESS CONTROL AND SECURITY #
- 5. FORWARDING #
- 6. WINDOWS GUI OPTIONS #
- #
-#################################################################
- </literallayout>
+ This file holds Privoxy's main configuration. Privoxy detects
+ configuration changes automatically, so you don't have to restart it
+ unless you want to load a different configuration file.
</para>
-
-<literallayout>I. INTRODUCTION
- =============== <!-- fuck this madness --></literallayout>
-
<para>
- This file holds the Privoxy configuration. If you modify this
- file, you will need to send a couple of requests to the proxy
- before any changes take effect.
+ The configuration will be reloaded with the first request after the
+ change was done, this request itself will still use the old configuration,
+ though. In other words: it takes two requests before you see the result of
+ your changes. Requests that are dropped due to ACL don't trigger reloads.
</para>
<para>
- When starting Privoxy on Unix systems, give the name of this
- file as an argument. On Windows systems, Privoxy will look for
- this file with the name 'config.txt' in the same directory where
- Privoxy is installed.
+ When starting Privoxy on Unix systems, give the location of this
+ file as last argument. On Windows systems, Privoxy will look for
+ this file with the name 'config.txt' in the current working directory
+ of the Privoxy process.
</para>
<para>
</para>
<para>
Thus, by placing a # at the start of an existing configuration line,
- you can make it a comment and it will be treated as if it weren't there.
- This is called "commenting out" an option and can be useful.
+ you can make it a comment and it will be treated as if it weren't there.
+ This is called "commenting out" an option and can be useful. Removing
+ the # again is called "uncommenting".
</para>
<para>
- Note that commenting out and option and leaving it at its default
+ Note that commenting out an option and leaving it at its default
are two completely different things! Most options behave very
- differently when unset. See the the "Effect if unset" explanation
+ differently when unset. See the "Effect if unset" explanation
in each option's description for details.
</para>
<para>
<!-- The following is common to both outputs (mostly) -->
<!-- ************************************************ -->
-<!-- ~~~~~ New section ~~~~~ -->
-<sect2 id="conf-log-loc">
-<title>Configuration and Log File Locations</title>
-<para>
- <application>Privoxy</application> can (and normally does) use a number of
- other files for additional configuration, help and logging.
- This section of the configuration file tells <application>Privoxy</application>
- where to find those other files.
-</para>
+<!-- ~~~~~ New section ~~~~~ -->
+<sect2 id="local-set-up">
+<title>Local Set-up Documentation</title>
-<para>
- The user running <application>Privoxy</application>, 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.
-</para>
+ If you intend to operate <application>Privoxy</application> 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.
+ </para>
<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="confdir"><title>confdir</title>
-
+<sect3 renderas="sect4" id="user-manual"><title>user-manual</title>
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
- <para>The directory where the other configuration files are located</para>
+ <para>
+ Location of the <application>Privoxy</application> User Manual.
+ </para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para>Path name</para>
+ <para>A fully qualified URI</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para>/etc/privoxy (Unix) <emphasis>or</emphasis> <application>Privoxy</application> installation dir (Windows) </para>
+ <para><emphasis>Unset</emphasis></para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
- <para><emphasis>Mandatory</emphasis></para>
+ <para>
+ <ulink url="https://www.privoxy.org/user-manual/">https://www.privoxy.org/<replaceable class="parameter">version</replaceable>/user-manual/</ulink>
+ will be used, where <replaceable class="parameter">version</replaceable> is the <application>Privoxy</application> version.
+ </para>
</listitem>
</varlistentry>
<varlistentry>
<term>Notes:</term>
<listitem>
+ <para>
+ The User Manual URI is the single best source of information on
+ <application>Privoxy</application>, 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.
+ </para>
+ <para>
+ Examples:
+ </para>
+ <!--
+ <para>
+ Unix, in local filesystem (may not work with all browsers):
+ </para>
+ <screen> user-manual file:///usr/share/doc/privoxy-&p-version;/user-manual/</screen>
+ <para>
+ Windows, in local filesystem, <emphasis>must</emphasis> use forward slash notation:
+ </para>
+ <screen> user-manual file:/c:/some-dir/privoxy-&p-version;/user-manual/</screen>
+ <para>
+ Windows, UNC notation (with forward slashes):
+ </para>
+ <screen> user-manual file://///some-server/some-path/privoxy-&p-version;/user-manual/</screen>
+ -->
+ <para>
+ The best all purpose solution is simply to put the full local
+ <literal>PATH</literal> to where the <citetitle>User Manual</citetitle> is
+ located:
+ </para>
+ <screen> user-manual /usr/share/doc/privoxy/user-manual</screen>
+ <para>
+ The User Manual is then available to anyone with access to
+ <application>Privoxy</application>, by following the built-in URL:
+ <literal>http://config.privoxy.org/user-manual/</literal>
+ (or the shortcut: <literal>http://p.p/user-manual/</literal>).
+ </para>
+ <para>
+ If the documentation is not on the local system, it can be accessed
+ from a remote server, as:
+ </para>
+ <screen> user-manual http://example.com/privoxy/user-manual/</screen>
+ <![%user-man;[
+ <!-- this gets hammered in conversion to config. Text repeated below. -->
+ <warning>
<para>
- No trailing <quote><literal>/</literal></quote>, please
+ If set, this option should be <emphasis>the first option in the config
+ file</emphasis>, because it is used while the config file is being read
+ on start-up.
</para>
+ </warning>
+ ]]>
+
+ <![%config-file;[
+ <!-- alternate -->
<para>
- When development goes modular and multi-user, the blocker, filter, and
- per-user config will be stored in subdirectories of <quote>confdir</quote>.
- For now, the configuration directory structure is flat, except for
- <filename>confdir/templates</filename>, where the HTML templates for CGI
- output reside (e.g. <application>Privoxy's</application> 404 error page).
+ WARNING!!!
</para>
- </listitem>
+ <blockquote>
+ <para>
+ If set, this option should be the first option in the config
+ file, because it is used while the config file is being read.
+ </para>
+ </blockquote>
+ ]]>
+
+ </listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@confdir .</literallayout>]]>
+<![%config-file;[<literallayout>@@#user-manual https://www.privoxy.org/user-manual/</literallayout>]]>
</sect3>
<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="logdir"><title>logdir</title>
+<sect3 renderas="sect4" id="trust-info-url"><title>trust-info-url</title>
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
<para>
- The directory where all logging takes place (i.e. where <filename>logfile</filename> and
- <filename>jarfile</filename> are located)
+ A URL to be displayed in the error page that users will see if access to an untrusted page is denied.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para>Path name</para>
+ <para>URL</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para>/var/log/privoxy (Unix) <emphasis>or</emphasis> <application>Privoxy</application> installation dir (Windows) </para>
+ <para><emphasis>Unset</emphasis></para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
- <para><emphasis>Mandatory</emphasis></para>
+ <para>
+ No links are displayed on the "untrusted" error page.
+ </para>
</listitem>
</varlistentry>
<varlistentry>
<term>Notes:</term>
<listitem>
<para>
- No trailing <quote><literal>/</literal></quote>, please
+ The value of this option only matters if the experimental trust mechanism has been
+ activated. (See <link linkend="trustfile"><emphasis>trustfile</emphasis></link> below.)
+ </para>
+ <para>
+ 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.
+ </para>
+ <para>
+ 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!
</para>
</listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@logdir .</literallayout>]]>
+<![%config-file;[<literallayout>@@#trust-info-url http://www.example.com/why_we_block.html</literallayout>]]>
+<![%config-file;[<literallayout>@@#trust-info-url http://www.example.com/what_we_allow.html</literallayout>]]>
</sect3>
<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="actionsfile"><title>
-actionsfile
-</title>
-<anchor id="default.action">
-<anchor id="standard.action">
-<anchor id="user.action">
-<!-- Note: slightly modified this section 04/28/02, hal. See NOTE. -->
+<sect3 renderas="sect4" id="admin-address"><title>admin-address</title>
+
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
<para>
- The <link linkend="actions-file">actions file(s)</link> to use
+ An email address to reach the <application>Privoxy</application> administrator.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para>File name, relative to <literal>confdir</literal>, without the <literal>.action</literal> suffix</para>
+ <para>Email address</para>
</listitem>
</varlistentry>
<varlistentry>
- <term>Default values:</term>
+ <term>Default value:</term>
<listitem>
- <simplelist>
- <member>
- <msgtext><literallayout> standard # Internal purposes, no editing recommended</literallayout></msgtext>
- </member>
- <member>
- <msgtext><literallayout> default # Main actions file</literallayout></msgtext>
- </member>
- <member>
- <msgtext><literallayout> user # User customizations</literallayout></msgtext>
- </member>
- </simplelist>
+ <para><emphasis>Unset</emphasis></para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
<para>
- No actions are taken at all. Simple neutral proxying.
+ No email address is displayed on error pages and the CGI user interface.
</para>
</listitem>
</varlistentry>
<term>Notes:</term>
<listitem>
<para>
- Multiple <literal>actionsfile</literal> lines are permitted, and are in fact recommended!
- </para>
- <para>
- The default values include standard.action, which is used for internal
- purposes and should be loaded, default.action, which is the
- <quote>main</quote> actions file maintained by the developers, and
- <filename>user.action</filename>, where you can make your personal additions.
- </para>
- <para>
- Actions files are where all the per site and per URL configuration is done for
- ad blocking, cookie management, privacy considerations, etc.
- There is no point in using <application>Privoxy</application> without at
- least one actions file.
+ If both <literal>admin-address</literal> and <literal>proxy-info-url</literal>
+ are unset, the whole "Local Privoxy Support" box on all generated pages will
+ not be shown.
</para>
</listitem>
</varlistentry>
</variablelist>
-<!-- NOTE: alternate markup to make a simpler list doesn't work due to -->
-<!-- html -> text conversion, blah -->
-<![%config-file;[<literallayout>@@actionsfile standard # Internal purpose, recommended</literallayout>]]>
-<![%config-file;[<literallayout>@@actionsfile default # Main actions file</literallayout>]]>
-<![%config-file;[<literallayout>@@actionsfile user # User customizations</literallayout>]]>
+<![%config-file;[<literallayout>@@#admin-address privoxy-admin@example.com</literallayout>]]>
</sect3>
+
<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="filterfile"><title>filterfile</title>
-<anchor id="default.filter">
+<sect3 renderas="sect4" id="proxy-info-url"><title>proxy-info-url</title>
+
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
<para>
- The <link linkend="filter-file">filter file</link> to use
+ A URL to documentation about the local <application>Privoxy</application> setup,
+ configuration or policies.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para>File name, relative to <literal>confdir</literal></para>
+ <para>URL</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para>default.filter (Unix) <emphasis>or</emphasis> default.filter.txt (Windows)</para>
+ <para><emphasis>Unset</emphasis></para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
<para>
- No textual content filtering takes place, i.e. all
- <literal>+<link linkend="filter">filter</link>{<replaceable class="parameter">name</replaceable>}</literal>
- actions in the actions files are turned neutral.
+ No link to local documentation is displayed on error pages and the CGI user interface.
</para>
</listitem>
</varlistentry>
<term>Notes:</term>
<listitem>
<para>
- The <link linkend="filter-file">filter file</link> contains content modification
- rules that use <link linkend="regex">regular expressions</link>. These rules permit
- powerful changes on the content of Web pages, e.g., you could disable your favorite
- JavaScript annoyances, re-write the actual displayed text, or just have some
- fun replacing <quote>Microsoft</quote> with <quote>MicroSuck</quote> wherever
- it appears on a Web page.
- </para>
- <para>
- The
- <literal>+<link linkend="filter">filter</link>{<replaceable class="parameter">name</replaceable>}</literal>
- actions rely on the relevant filter (<replaceable class="parameter">name</replaceable>)
- to be defined in the filter file!
+ If both <literal>admin-address</literal> and <literal>proxy-info-url</literal>
+ are unset, the whole "Local Privoxy Support" box on all generated pages will
+ not be shown.
</para>
<para>
- A pre-defined filter file called <filename>default.filter</filename> that contains
- a bunch of handy filters for common problems is included in the distribution.
- See the section on the <literal><link linkend="filter">filter</link></literal>
- action for a list.
+ This URL shouldn't be blocked ;-)
</para>
</listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@filterfile default.filter</literallayout>]]>
+<![%config-file;[<literallayout>@@#proxy-info-url http://www.example.com/proxy-service.html</literallayout>]]>
</sect3>
+</sect2>
+<!-- ~ End section ~ -->
+
+
<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="logfile"><title>logfile</title>
+
+<sect2 id="conf-log-loc">
+<title>Configuration and Log File Locations</title>
+
+<para>
+ <application>Privoxy</application> can (and normally does) use a number of
+ other files for additional configuration, help and logging.
+ This section of the configuration file tells <application>Privoxy</application>
+ where to find those other files.
+</para>
+
+<para>
+ The user running <application>Privoxy</application>, 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.
+</para>
+
+
+<!-- ~~~~~ New section ~~~~~ -->
+<sect3 renderas="sect4" id="confdir"><title>confdir</title>
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
- <para>
- The log file to use
- </para>
+ <para>The directory where the other configuration files are located.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para>File name, relative to <literal>logdir</literal></para>
+ <para>Path name</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para>logfile (Unix) <emphasis>or</emphasis> privoxy.log (Windows)</para>
+ <para>/etc/privoxy (Unix) <emphasis>or</emphasis> <application>Privoxy</application> installation dir (Windows) </para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
- <para>
- No log file is used, all log messages go to the console (<literal>STDERR</literal>).
- </para>
+ <para><emphasis>Mandatory</emphasis></para>
</listitem>
</varlistentry>
<varlistentry>
<term>Notes:</term>
<listitem>
<para>
- The windows version will additionally log to the console.
- </para>
- <para>
- The logfile is where all logging and error messages are written. The level
- of detail and number of messages are set with the <literal>debug</literal>
- option (see below). The logfile can be useful for tracking down a problem with
- <application>Privoxy</application> (e.g., it's not blocking an ad you
- think it should block) but in most cases you probably will never look at it.
- </para>
- <para>
- 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 <quote>man cron</quote>). For Red Hat, a <command>logrotate</command>
- script has been included.
- </para>
- <para>
- On SuSE Linux systems, you can place a line like <quote>/var/log/privoxy.*
- +1024k 644 nobody.nogroup</quote> in <filename>/etc/logfiles</filename>, with
- the effect that cron.daily will automatically archive, gzip, and empty the
- log, when it exceeds 1M size.
- </para>
- <para>
- Any log files must be writable by whatever user <application>Privoxy</application>
- is being run as (default on UNIX, user id is <quote>privoxy</quote>).
+ No trailing <quote><literal>/</literal></quote>, please.
</para>
</listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@logfile logfile</literallayout>]]>
+<![%config-file;[<literallayout>@@confdir .</literallayout>]]>
</sect3>
-
<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="jarfile"><title>jarfile</title>
+<sect3 renderas="sect4" id="templdir"><title>templdir</title>
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
- <para>
- The file to store intercepted cookies in
- </para>
+ <para>An alternative directory where the templates are loaded from.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para>File name, relative to <literal>logdir</literal></para>
+ <para>Path name</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para>jarfile (Unix) <emphasis>or</emphasis> privoxy.jar (Windows)</para>
+ <para>unset</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
- <para>
- Intercepted cookies are not stored at all.
- </para>
+ <para>The templates are assumed to be located in confdir/template.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Notes:</term>
<listitem>
<para>
- The jarfile may grow to ridiculous sizes over time.
+ <application>Privoxy's</application> 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
+ <application>Privoxy</application> releases other than the one
+ they were part of, though.
</para>
</listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@jarfile jarfile</literallayout>]]>
+<![%config-file;[<literallayout>@@#templdir .</literallayout>]]>
</sect3>
<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="trustfile"><title>trustfile</title>
+<sect3 renderas="sect4" id="temporary-directory"><title>temporary-directory</title>
+
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
- <para>
- The trust file to use
- </para>
+ <para>A directory where Privoxy can create temporary files.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para>File name, relative to <literal>confdir</literal></para>
+ <para>Path name</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para><emphasis>Unset (commented out)</emphasis>. When activated: trust (Unix) <emphasis>or</emphasis> trust.txt (Windows)</para>
+ <para>unset</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
- <para>
- The whole trust mechanism is turned off.
- </para>
+ <para>No temporary files are created, external filters don't work.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Notes:</term>
<listitem>
<para>
- The trust mechanism is an experimental feature for building white-lists and should
- be used with care. It is <emphasis>NOT</emphasis> recommended for the casual user.
- </para>
- <para>
- If you specify a trust file, <application>Privoxy</application> will only allow
- access to sites that are specified in the trustfile. Sites can be listed
- in one of two ways:
- </para>
- <para>
- Prepending a <literal>~</literal> character limits access to this site
- only (and any sub-paths within this site), e.g.
- <literal>~www.example.com</literal>.
+ To execute <literal><ulink url="actions-file.html#EXTERNAL-FILTER">external filters</ulink></literal>,
+ <application>Privoxy</application> has to create temporary files.
+ This directive specifies the directory the temporary files should
+ be written to.
</para>
<para>
- Or, you can designate sites as <emphasis>trusted referrers</emphasis>, by
- prepending the name with a <literal>+</literal> character. The effect is that
- access to untrusted sites will be granted -- but only if a link from this
- trusted referrer was used. The link target will then be added to the
- <quote>trustfile</quote> 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 <literal>~</literal> designation).
- </para>
- <para>
- If you use the <literal>+</literal> operator in the trust file, it may grow
- considerably over time.
- </para>
- <para>
- It is recommended that <application>Privoxy</application> be compiled with
- the <literal>--disable-force</literal>, <literal>--disable-toggle</literal> and
- <literal> --disable-editor</literal> options, if this feature is to be
- used.
- </para>
- <para>
- Possible applications include limiting Internet access for children.
+ It should be a directory only <application>Privoxy</application>
+ (and trusted users) can access.
</para>
</listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@#trustfile trust</literallayout>]]>
+<![%config-file;[<literallayout>@@#temporary-directory .</literallayout>]]>
</sect3>
-</sect2>
-
-<!-- ~ End section ~ -->
<!-- ~~~~~ New section ~~~~~ -->
-<sect2 id="local-set-up">
-<title>Local Set-up Documentation</title>
+<sect3 renderas="sect4" id="logdir"><title>logdir</title>
- <para>
- If you intend to operate <application>Privoxy</application> 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.
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ The directory where all logging takes place
+ (i.e. where the <filename>logfile</filename> is located).
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>Path name</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>/var/log/privoxy (Unix) <emphasis>or</emphasis> <application>Privoxy</application> installation dir (Windows) </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para><emphasis>Mandatory</emphasis></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ No trailing <quote><literal>/</literal></quote>, please.
</para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<![%config-file;[<literallayout>@@logdir .</literallayout>]]>
+</sect3>
<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="user-manual"><title>user-manual</title>
+<sect3 renderas="sect4" id="actionsfile"><title>
+actionsfile
+</title>
+<anchor id="default.action">
+<anchor id="standard.action">
+<anchor id="user.action">
+<!-- Note: slightly modified this section 04/28/02, hal. See NOTE. -->
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
<para>
- Location of the <application>Privoxy</application> User Manual.
+ The <link linkend="actions-file">actions file(s)</link> to use
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para>A fully qualified URI</para>
+ <para>Complete file name, relative to <literal>confdir</literal></para>
</listitem>
</varlistentry>
<varlistentry>
- <term>Default value:</term>
+ <term>Default values:</term>
<listitem>
- <para><emphasis>Unset</emphasis></para>
+ <simplelist>
+ <member>
+ <msgtext><literallayout> match-all.action # Actions that are applied to all sites and maybe overruled later on.</literallayout></msgtext>
+ </member>
+ <member>
+ <msgtext><literallayout> default.action # Main actions file</literallayout></msgtext>
+ </member>
+ <member>
+ <msgtext><literallayout> user.action # User customizations</literallayout></msgtext>
+ </member>
+ </simplelist>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
<para>
- <ulink url="http://www.privoxy.org/user-manual/">http://www.privoxy.org/<replaceable class="parameter">version</replaceable>/user-manual/</ulink>
- will be used, where <replaceable class="parameter">version</replaceable> is the <application>Privoxy</application> version.
+ No actions are taken at all. More or less neutral proxying.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Notes:</term>
<listitem>
- <para>
- The User Manual URI 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. For multi-user setups, you could provide a copy on
- a local webserver for all your users and use the corresponding URL here.
- </para>
<para>
- Examples:
+ Multiple <literal>actionsfile</literal> lines are permitted, and are in fact recommended!
</para>
- <!-- The below needs checking after a rebuild due to long file names -->
- <para>
- Unix, in local filesystem:
- </para>
- <para>
- <screen> user-manual file:///usr/share/doc/privoxy-&p-version;/user-manual/index.html</screen>
- </para>
- <para>
- Windows, in local filesystem, <emphasis>must</emphasis> use forward slash notation, and <literal>%20</literal> to denote
- spaces in path names:
- </para>
- <para>
- <screen> user-manual file:///c:/some%20dir/privoxy/user-manual/index.html</screen>
- </para>
- <para>
- Windows, UNC notation (forward slashes required again):
- </para>
- <para>
- <screen> user-manual file://///some-server/some-path/privoxy/user-manual/index.html</screen>
- </para>
- <para>
- Any platform, on local webserver (called <quote>local-webserver</quote>):
- </para>
- <para>
- <screen> user-manual http://local-webserver/privoxy-user-manual/</screen>
- </para>
- <![%user-man;[
- <!-- this gets hammered in conversion to config. Text repeated below. -->
- <warning>
<para>
- If set, this option should be <emphasis>the first option in the config
- file</emphasis>, because it is used while the config file is being read.
+ The default values are <filename>default.action</filename>, which is the
+ <quote>main</quote> actions file maintained by the developers, and
+ <filename>user.action</filename>, where you can make your personal additions.
</para>
- </warning>
- ]]>
-
- <![%config-file;[
- <!-- alternate -->
<para>
- WARNING!!!
+ Actions files contain all the per site and per URL configuration for
+ ad blocking, cookie management, privacy considerations, etc.
</para>
- <blockquote>
- <para>
- If set, this option should be the first option in the config
- file, because it is used while the config file is being read.
- </para>
- </blockquote>
- ]]>
-
- </listitem>
+ </listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@#user-manual http://www.privoxy.org/user-manual/</literallayout>]]>
+<!-- NOTE: alternate markup to make a simpler list doesn't work due to -->
+<!-- html -> text conversion, blah -->
+<![%config-file;[<literallayout>@@actionsfile match-all.action # Actions that are applied to all sites and maybe overruled later on.</literallayout>]]>
+<![%config-file;[<literallayout>@@actionsfile default.action # Main actions file</literallayout>]]>
+<!--
+ XXX: Like user.filter, user.action should probably be commented out
+ by default as not all packages install it into the default directory.
+ fk 2007-11-07
+-->
+<![%config-file;[<literallayout>@@actionsfile user.action # User customizations</literallayout>]]>
</sect3>
-
<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="trust-info-url"><title>trust-info-url</title>
-
+<sect3 renderas="sect4" id="filterfile"><title>filterfile</title>
+<anchor id="default.filter">
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
<para>
- A URL to be displayed in the error page that users will see if access to an untrusted page is denied.
+ The <link linkend="filter-file">filter file(s)</link> to use
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para>URL</para>
+ <para>File name, relative to <literal>confdir</literal></para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para>Two example URL are provided</para>
+ <para>default.filter (Unix) <emphasis>or</emphasis> default.filter.txt (Windows)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
<para>
- No links are displayed on the "untrusted" error page.
+ No textual content filtering takes place, i.e. all
+ <literal>+<link linkend="filter">filter</link>{<replaceable class="parameter">name</replaceable>}</literal>
+ actions in the actions files are turned neutral.
</para>
</listitem>
</varlistentry>
<term>Notes:</term>
<listitem>
<para>
- The value of this option only matters if the experimental trust mechanism has been
- activated. (See <link linkend="trustfile"><emphasis>trustfile</emphasis></link> above.)
+ Multiple <literal>filterfile</literal> lines are permitted.
</para>
<para>
- 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.
+ The <link linkend="filter-file">filter files</link> contain content modification
+ rules that use <link linkend="regex">regular expressions</link>. 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.
</para>
<para>
- 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!
+ The
+ <literal>+<link linkend="filter">filter</link>{<replaceable class="parameter">name</replaceable>}</literal>
+ actions rely on the relevant filter (<replaceable class="parameter">name</replaceable>)
+ to be defined in a filter file!
+ </para>
+ <para>
+ A pre-defined filter file called <filename>default.filter</filename> that contains
+ a number of useful filters for common problems is included in the distribution.
+ See the section on the <literal><link linkend="filter">filter</link></literal>
+ action for a list.
+ </para>
+ <para>
+ It is recommended to place any locally adapted filters into a separate
+ file, such as <filename>user.filter</filename>.
</para>
</listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@trust-info-url http://www.example.com/why_we_block.html</literallayout>]]>
-<![%config-file;[<literallayout>@@trust-info-url http://www.example.com/what_we_allow.html</literallayout>]]>
+<![%config-file;[<literallayout>@@filterfile default.filter</literallayout>]]>
+<![%config-file;[<literallayout>@@filterfile user.filter # User customizations</literallayout>]]>
</sect3>
<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="admin-address"><title>admin-address</title>
+<sect3 renderas="sect4" id="logfile"><title>logfile</title>
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
<para>
- An email address to reach the proxy administrator.
+ The log file to use
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para>Email address</para>
+ <para>File name, relative to <literal>logdir</literal></para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para><emphasis>Unset</emphasis></para>
+ <para><emphasis>Unset (commented out)</emphasis>. When activated: logfile (Unix) <emphasis>or</emphasis> privoxy.log (Windows).</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
<para>
- No email address is displayed on error pages and the CGI user interface.
+ No logfile is written.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Notes:</term>
<listitem>
- <para>
- If both <literal>admin-address</literal> and <literal>proxy-info-url</literal>
- are unset, the whole "Local Privoxy Support" box on all generated pages will
- not be shown.
- </para>
+ <para>
+ The logfile is where all logging and error messages are written. The level
+ of detail and number of messages are set with the <literal>debug</literal>
+ option (see below). The logfile can be useful for tracking down a problem with
+ <application>Privoxy</application> (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.
+ </para>
+ <para>
+ 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, <application>Privoxy</application> only logs fatal errors by default.
+ </para>
+ <para>
+ For most troubleshooting purposes, you will have to change that,
+ please refer to the debugging section for details.
+ </para>
+ <para>
+ Any log files must be writable by whatever user <application>Privoxy</application>
+ is being run as (on Unix, default user id is <quote>privoxy</quote>).
+ </para>
+ <para>
+ 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.
+ </para>
</listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@#admin-address privoxy-admin@example.com</literallayout>]]>
+<![%config-file;[<literallayout>@@logfile logfile</literallayout>]]>
</sect3>
<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="proxy-info-url"><title>proxy-info-url</title>
-
+<sect3 renderas="sect4" id="trustfile"><title>trustfile</title>
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
<para>
- A URL to documentation about the local <application>Privoxy</application> setup,
- configuration or policies.
+ The name of the trust file to use
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para>URL</para>
+ <para>File name, relative to <literal>confdir</literal></para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para><emphasis>Unset</emphasis></para>
+ <para><emphasis>Unset (commented out)</emphasis>. When activated: trust (Unix) <emphasis>or</emphasis> trust.txt (Windows)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
<para>
- No link to local documentation is displayed on error pages and the CGI user interface.
+ The entire trust mechanism is disabled.
</para>
</listitem>
</varlistentry>
<term>Notes:</term>
<listitem>
<para>
- If both <literal>admin-address</literal> and <literal>proxy-info-url</literal>
- are unset, the whole "Local Privoxy Support" box on all generated pages will
- not be shown.
- </para>
+ The trust mechanism is an experimental feature for building white-lists and should
+ be used with care. It is <emphasis>NOT</emphasis> recommended for the casual user.
+ </para>
<para>
- This URL shouldn't be blocked ;-)
- </para>
+ If you specify a trust file, <application>Privoxy</application> will only allow
+ access to sites that are specified in the trustfile. Sites can be listed
+ in one of two ways:
+ </para>
+ <para>
+ Prepending a <literal>~</literal> character limits access to this site
+ only (and any sub-paths within this site), e.g.
+ <literal>~www.example.com</literal> allows access to
+ <literal>~www.example.com/features/news.html</literal>, etc.
+ </para>
+ <para>
+ Or, you can designate sites as <emphasis>trusted referrers</emphasis>, by
+ prepending the name with a <literal>+</literal> 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 <quote>trustfile</quote> 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 <literal>~</literal> designation).
+ There is a limit of 512 such entries, after which new entries will not be
+ made.
+ </para>
+ <para>
+ If you use the <literal>+</literal> operator in the trust file, it may grow
+ considerably over time.
+ </para>
+ <para>
+ It is recommended that <application>Privoxy</application> be compiled with
+ the <literal>--disable-force</literal>, <literal>--disable-toggle</literal> and
+ <literal> --disable-editor</literal> options, if this feature is to be
+ used.
+ </para>
+ <para>
+ Possible applications include limiting Internet access for children.
+ </para>
+
</listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@#proxy-info-url http://www.example.com/proxy-service.html</literallayout>]]>
+<![%config-file;[<literallayout>@@#trustfile trust</literallayout>]]>
</sect3>
-
</sect2>
+
<!-- ~ End section ~ -->
<!-- ~~~~~ New section ~~~~~ -->
<term>Specifies:</term>
<listitem>
<para>
- Key values that determine what information gets logged to the
- <link linkend="logfile"><emphasis>logfile</emphasis></link>.
+ Key values that determine what information gets logged.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para>12289 (i.e.: URLs plus informational and warning messages)</para>
+ <para>0 (i.e.: only fatal errors (that cause Privoxy to exit) are logged)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
<para>
- Nothing gets logged.
+ Default value is used (see above).
</para>
</listitem>
</varlistentry>
<para>
The available debug levels are:
</para>
- <para>
<programlisting>
- debug 1 # show each GET/POST/CONNECT request
- debug 2 # show each connection status
- debug 4 # show I/O status
- debug 8 # show header parsing
- debug 16 # log all data into the logfile
- debug 32 # debug force feature
- debug 64 # debug regular expression filter
- debug 128 # debug fast redirects
- debug 256 # debug GIF de-animation
- debug 512 # Common Log Format
- debug 1024 # debug kill pop-ups
- debug 2048 # CGI user interface
- debug 4096 # Startup banner and warnings.
- debug 8192 # Non-fatal errors
+ debug 1 # Log the destination for each request &my-app; 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 &my-app; 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
</programlisting>
- </para>
<para>
To select multiple debug levels, you can either add them or use
multiple <literal>debug</literal> lines.
</para>
<para>
A debug level of 1 is informative because it will show you each request
- as it happens. <emphasis>1, 4096 and 8192 are highly recommended</emphasis>
- 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).
- <!-- LOL -->
+ as it happens. <emphasis>1, 1024, 4096 and 8192 are recommended</emphasis>
+ 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).
</para>
<para>
- The reporting of <emphasis>fatal</emphasis> errors (i.e. ones which crash
- <application>Privoxy</application>) is always on and cannot be disabled.
+ If you are used to the more verbose settings, simply enable the debug lines
+ below again.
</para>
<para>
- If you want to use CLF (Common Log Format), you should set <quote>debug
+ If you want to use pure CLF (Common Log Format), you should set <quote>debug
512</quote> <emphasis>ONLY</emphasis> and not enable anything else.
</para>
+ <para>
+ <application>Privoxy</application> has a hard-coded limit for the
+ length of log messages. If it's reached, messages are logged truncated
+ and marked with <quote>... [too long, truncated]</quote>.
+ </para>
+ <para>
+ 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.
+ </para>
</listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@debug 1 # show each GET/POST/CONNECT request</literallayout>]]>
-<![%config-file;[<literallayout>@@debug 4096 # Startup banner and warnings</literallayout>]]>
-<![%config-file;[<literallayout>@@debug 8192 # Errors - *we highly recommended enabling this*</literallayout>]]>
+<![%config-file;[<literallayout>@@#debug 1 # Log the destination for each request &my-app; let through.</literallayout>]]>
+<![%config-file;[<literallayout>@@#debug 1024 # Log the destination for requests &my-app; didn't let through, and the reason why.</literallayout>]]>
+<![%config-file;[<literallayout>@@#debug 4096 # Startup banner and warnings</literallayout>]]>
+<![%config-file;[<literallayout>@@#debug 8192 # Non-fatal errors</literallayout>]]>
</sect3>
<term>Specifies:</term>
<listitem>
<para>
- Whether to run only one server thread
+ Whether to run only one server thread.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para><emphasis>None</emphasis></para>
+ <para><emphasis>1 or 0</emphasis></para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para><emphasis>Unset</emphasis></para>
+ <para><emphasis>0</emphasis></para>
</listitem>
</varlistentry>
<varlistentry>
<term>Notes:</term>
<listitem>
<para>
- This option is only there for debug purposes and you should never
- need to use it. <emphasis>It will drastically reduce performance.</emphasis>
+ This option is only there for debugging purposes.
+ <emphasis>It will drastically reduce performance.</emphasis>
</para>
</listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@#single-threaded</literallayout>]]>
+<![%config-file;[<literallayout>@@#single-threaded 1</literallayout>]]>
</sect3>
-</sect2>
-
-<!-- ~ End section ~ -->
-
-
-<!-- ~~~~~ New section ~~~~~ -->
-<sect2 id="access-control">
-<title>Access Control and Security</title>
-
- <para>
- This section of the config file controls the security-relevant aspects
- of <application>Privoxy</application>'s configuration.
- </para>
-
-
<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="listen-address"><title>listen-address</title>
+<sect3 renderas="sect4" id="hostname"><title>hostname</title>
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
<para>
- The IP address and TCP port on which <application>Privoxy</application> will
- listen for client requests.
+ The hostname shown on the CGI pages.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para>[<replaceable class="parameter">IP-Address</replaceable>]:<replaceable class="parameter">Port</replaceable></para>
+ <para>Text</para>
</listitem>
</varlistentry>
-
<varlistentry>
<term>Default value:</term>
<listitem>
- <para>127.0.0.1:8118</para>
+ <para><emphasis>Unset</emphasis></para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
<para>
- Bind to 127.0.0.1 (localhost), port 8118. This is suitable and recommended for
- home users who run <application>Privoxy</application> on the same machine as
- their browser.
+ The hostname provided by the operating system is used.
</para>
</listitem>
</varlistentry>
<term>Notes:</term>
<listitem>
<para>
- You will need to configure your browser(s) to this proxy address and port.
- </para>
- <para>
- 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.
+ 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.
</para>
<para>
- If you leave out the IP address, <application>Privoxy</application> will
- bind to all interfaces (addresses) on your machine and may become reachable
- from the Internet. In that case, consider using <link
- linkend="acls">access control lists</link> (ACL's, see below), and/or
- a firewall.
+ 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.
</para>
<para>
- If you open <application>Privoxy</application> to untrusted users, you will
- also want to turn off the <literal><link
- linkend="enable-edit-actions">enable-edit-actions</link></literal> and
- <literal><link linkend="enable-remote-toggle">enable-remote-toggle</link></literal>
- options!
+ Note that Privoxy does not validate the specified hostname value.
</para>
</listitem>
</varlistentry>
- <varlistentry>
- <term>Example:</term>
- <listitem>
+</variablelist>
+
+<![%config-file;[<literallayout>@@#hostname hostname.example.org</literallayout>]]>
+</sect3>
+
+</sect2>
+
+<!-- ~ End section ~ -->
+
+
+<!-- ~~~~~ New section ~~~~~ -->
+<sect2 id="access-control">
+<title>Access Control and Security</title>
+
+ <para>
+ This section of the config file controls the security-relevant aspects
+ of <application>Privoxy</application>'s configuration.
+ </para>
+
+
+<!-- ~~~~~ New section ~~~~~ -->
+<sect3 renderas="sect4" id="listen-address"><title>listen-address</title>
+
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ The address and TCP port on which <application>Privoxy</application> will
+ listen for client requests.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>[<replaceable class="parameter">IP-Address</replaceable>]:<replaceable class="parameter">Port</replaceable></para>
+ <para>[<replaceable class="parameter">Hostname</replaceable>]:<replaceable class="parameter">Port</replaceable></para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>127.0.0.1:8118</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Bind to 127.0.0.1 (IPv4 localhost), port 8118. This is suitable and
+ recommended for home users who run <application>Privoxy</application> on
+ the same machine as their browser.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ You will need to configure your browser(s) to this proxy address and port.
+ </para>
+ <para>
+ 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.
+ </para>
+ <para>
+ You can use this statement multiple times to make
+ <application>Privoxy</application> listen on more ports or more
+ <abbrev>IP</abbrev> addresses. Suitable if your operating system does not
+ support sharing <abbrev>IPv6</abbrev> and <abbrev>IPv4</abbrev> protocols
+ on the same socket.
+ </para>
+ <para>
+ If a hostname is used instead of an IP address, <application>Privoxy</application>
+ will try to resolve it to an IP address and if there are multiple, use the first
+ one returned.
+ </para>
+ <para>
+ 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.
+ </para>
+ <para>
+ If the specified address isn't available on the system, or if the
+ hostname can't be resolved, <application>Privoxy</application>
+ will fail to start.
+ </para>
+ <para>
+ IPv6 addresses containing colons have to be quoted by brackets.
+ They can only be used if <application>Privoxy</application> has
+ been compiled with IPv6 support. If you aren't sure if your version
+ supports it, have a look at
+ <literal>http://config.privoxy.org/show-status</literal>.
+ </para>
+ <para>
+ 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.
+ </para>
+ <para>
+ 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.
+ </para>
+ <para>
+ If you leave out the address, <application>Privoxy</application> 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 <application>Privoxy</application> version behaves differently.
+ </para>
+ <para>
+ If you configure <application>Privoxy</application> to be reachable from the
+ network, consider using <link linkend="acls">access control lists</link>
+ (ACL's, see below), and/or a firewall.
+ </para>
+ <para>
+ If you open <application>Privoxy</application> to untrusted users, you will
+ also want to make sure that the following actions are disabled: <literal><link
+ linkend="enable-edit-actions">enable-edit-actions</link></literal> and
+ <literal><link linkend="enable-remote-toggle">enable-remote-toggle</link></literal>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Example:</term>
+ <listitem>
<para>
Suppose you are running <application>Privoxy</application> 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:
</para>
- <para>
<programlisting>
listen-address 192.168.0.1:8118
</programlisting>
+ <para>
+ Suppose you are running <application>Privoxy</application> on an
+ IPv6-capable machine and you want it to listen on the IPv6 address
+ of the loopback device:
</para>
+ <programlisting>
+ listen-address [::1]:8118
+</programlisting>
</listitem>
</varlistentry>
</variablelist>
<listitem>
<para>
If set to 0, <application>Privoxy</application> will start in
- <quote>toggled off</quote> mode, i.e. behave like a normal, content-neutral
- proxy where all ad blocking, filtering, etc are disabled. See
- <literal>enable-remote-toggle</literal> below. This is not really useful
- anymore, since toggling is much easier via <ulink
- url="http://config.privoxy.org/toggle">the web interface</ulink> than via
- editing the <filename>conf</filename> file.
- </para>
- <para>
- The windows version will only display the toggle icon in the system tray
- if this option is present.
+ <quote>toggled off</quote> mode, i.e. mostly behave like a normal,
+ content-neutral proxy with both ad blocking and content filtering
+ disabled. See <literal>enable-remote-toggle</literal> below.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para>1</para>
+ <para>0</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Notes:</term>
<listitem>
<para>
- When toggled off, <application>Privoxy</application> acts like a normal,
- content-neutral proxy, i.e. it acts as if none of the actions applied to
- any URL.
+ When toggled off, <application>Privoxy</application> mostly acts like a normal,
+ content-neutral proxy, i.e. doesn't block ads or filter content.
</para>
<para>
- For the time being, access to the toggle feature can <emphasis>not</emphasis> be
+ Access to the toggle feature can <emphasis>not</emphasis> be
controlled separately by <quote>ACLs</quote> or HTTP authentication,
so that everybody who can access <application>Privoxy</application> (see
<quote>ACLs</quote> and <literal>listen-address</literal> above) can
toggle it for all users. So this option is <emphasis>not recommended</emphasis>
for multi-user environments with untrusted users.
</para>
+ <para>
+ Note that malicious client side code (e.g Java) is also
+ capable of using this option.
+ </para>
+ <para>
+ As a lot of <application>Privoxy</application> users don't read
+ documentation, this feature is disabled by default.
+ </para>
<para>
Note that you must have compiled <application>Privoxy</application> with
- support for this feature, otherwise this option has no effect.
+ support for this feature, otherwise this option has no effect.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<![%config-file;[<literallayout>@@enable-remote-toggle 0</literallayout>]]>
+</sect3>
+
+
+<!-- ~~~~~ New section ~~~~~ -->
+<sect3 renderas="sect4" id="enable-remote-http-toggle"><title>enable-remote-http-toggle</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Whether or not Privoxy recognizes special HTTP headers to change its behaviour.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>0 or 1</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>0</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Privoxy ignores special HTTP headers.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ When toggled on, the client can change <application>Privoxy's</application>
+ behaviour by setting special HTTP headers. Currently the only supported
+ special header is <quote>X-Filter: No</quote>, to disable filtering for
+ the ongoing request, even if it is enabled in one of the action files.
+ </para>
+ <para>
+ This feature is disabled by default. If you are using
+ <application>Privoxy</application> 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.
+ </para>
+ <para>
+ This option will be removed in future releases as it has been obsoleted
+ by the more general header taggers.
</para>
</listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@enable-remote-toggle 1</literallayout>]]>
+<![%config-file;[<literallayout>@@enable-remote-http-toggle 0</literallayout>]]>
</sect3>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para>1</para>
+ <para>0</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Notes:</term>
<listitem>
<para>
- For the time being, access to the editor can <emphasis>not</emphasis> be
+ Access to the editor can <emphasis>not</emphasis> be
controlled separately by <quote>ACLs</quote> or HTTP authentication,
so that everybody who can access <application>Privoxy</application> (see
<quote>ACLs</quote> and <literal>listen-address</literal> above) can
- modify its configuration for all users. So this option is <emphasis>not
- recommended</emphasis> for multi-user environments with untrusted users.
+ modify its configuration for all users.
+ </para>
+ <para>
+ This option is <emphasis>not recommended</emphasis> for environments
+ with untrusted users and as a lot of <application>Privoxy</application>
+ users don't read documentation, this feature is disabled by default.
+ </para>
+ <para>
+ 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.
</para>
<para>
Note that you must have compiled <application>Privoxy</application> with
- support for this feature, otherwise this option has no effect.
+ support for this feature, otherwise this option has no effect.
</para>
</listitem>
</varlistentry>
</variablelist>
-<![%config-file;[<literallayout>@@enable-edit-actions 1</literallayout>]]>
+<![%config-file;[<literallayout>@@enable-edit-actions 0</literallayout>]]>
+</sect3>
+
+
+<sect3 renderas="sect4" id="enforce-blocks"><title>enforce-blocks</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Whether the user is allowed to ignore blocks and can <quote>go there anyway</quote>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>0 or 1</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para><emphasis>0</emphasis></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Blocks are not enforced.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ <application>Privoxy</application> 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. <application>Privoxy's</application> 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
+ <application>Privoxy</application> ignore the block.
+ </para>
+ <para>
+ In the default configuration <application>Privoxy's</application>
+ <quote>Blocked</quote> page contains a <quote>go there anyway</quote>
+ link to adds a special string (the force prefix) to the request URL.
+ If that link is used, <application>Privoxy</application> will
+ detect the force prefix, remove it again and let the request pass.
+ </para>
+ <para>
+ Of course <application>Privoxy</application> 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 <quote>enforce-blocks</quote>
+ option is for. If it's enabled, <application>Privoxy</application> hides
+ the <quote>go there anyway</quote> link. If the user adds the force
+ prefix by hand, it will not be accepted and the circumvention attempt
+ is logged.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ enforce-blocks 1
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@enforce-blocks 0</literallayout>]]>
</sect3>
+
<!-- ~~~~~ New section ~~~~~ -->
<sect3 renderas="sect4" id="acls"><title>
ACLs: permit-access and deny-access</title>
<term>Type of value:</term>
<listitem>
<para>
- <replaceable class="parameter">src_addr</replaceable>[/<replaceable class="parameter">src_masklen</replaceable>]
- [<replaceable class="parameter">dst_addr</replaceable>[/<replaceable class="parameter">dst_masklen</replaceable>]]
+ <replaceable class="parameter">src_addr</replaceable>[:<replaceable class="parameter">port</replaceable>][/<replaceable class="parameter">src_masklen</replaceable>]
+ [<replaceable class="parameter">dst_addr</replaceable>[:<replaceable class="parameter">port</replaceable>][/<replaceable class="parameter">dst_masklen</replaceable>]]
</para>
<para>
- Where <replaceable class="parameter">src_addr</replaceable> and
- <replaceable class="parameter">dst_addr</replaceable> are IP addresses in dotted decimal notation or valid
- DNS names, and <replaceable class="parameter">src_masklen</replaceable> and
+ Where <replaceable class="parameter">src_addr</replaceable> and
+ <replaceable class="parameter">dst_addr</replaceable> are IPv4 addresses in dotted decimal notation or valid
+ DNS names, <replaceable class="parameter">port</replaceable> is a port
+ number, and <replaceable class="parameter">src_masklen</replaceable> and
<replaceable class="parameter">dst_masklen</replaceable> 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.
</para>
+ <para>
+ If your system implements
+ <ulink url="http://tools.ietf.org/html/rfc3493">RFC 3493</ulink>, then
+ <replaceable class="parameter">src_addr</replaceable> and <replaceable
+ class="parameter">dst_addr</replaceable> can be IPv6 addresses delimeted by
+ brackets, <replaceable class="parameter">port</replaceable> can be a number
+ or a service name, and
+ <replaceable class="parameter">src_masklen</replaceable> and
+ <replaceable class="parameter">dst_masklen</replaceable> can be a number
+ from 0 to 128.
+ </para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
<para><emphasis>Unset</emphasis></para>
+ <para>
+ If no <replaceable class="parameter">port</replaceable> is specified,
+ any port will match. If no <replaceable class="parameter">src_masklen</replaceable> or
+ <replaceable class="parameter">src_masklen</replaceable> is given, the complete IP
+ address has to match (i.e. 32 bits for IPv4 and 128 bits for IPv6).
+ </para>
</listitem>
</varlistentry>
<varlistentry>
<para>
Access controls are included at the request of ISPs and systems
administrators, and <emphasis>are not usually needed by individual users</emphasis>.
- For a typical home user, it will normally suffice to ensure that
+ For a typical home user, it will normally suffice to ensure that
<application>Privoxy</application> only listens on the localhost
(127.0.0.1) or internal (home) network address by means of the
<link linkend="listen-address"><emphasis>listen-address</emphasis></link>
- option.
+ option.
</para>
<para>
- Please see the warnings in the FAQ that this proxy is not intended to be a substitute
- for a firewall or to encourage anyone to defer addressing basic security
- weaknesses.
+ Please see the warnings in the FAQ that <application>Privoxy</application>
+ is not intended to be a substitute for a firewall or to encourage anyone
+ to defer addressing basic security weaknesses.
</para>
<para>
Multiple ACL lines are OK.
- If any ACLs are specified, then the <application>Privoxy</application>
- talks only to IP addresses that match at least one <literal>permit-access</literal> line
+ If any ACLs are specified, <application>Privoxy</application> only talks
+ to IP addresses that match at least one <literal>permit-access</literal> line
and don't match any subsequent <literal>deny-access</literal> line. In other words, the
last match wins, with the default being <literal>deny-access</literal>.
</para>
like <quote>*.org</quote> or partial domain names. If a DNS name resolves to multiple
IP addresses, only the first one is used.
</para>
+ <para>
+ 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). <application>Privoxy</application> can handle it
+ and maps such ACL addresses automatically.
+ </para>
<para>
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.
+ if the site in question is hosted on a machine which also hosts other sites
+ (most sites are).
</para>
</listitem>
</varlistentry>
is OK. The absence of a <replaceable class="parameter">dst_addr</replaceable> implies that
<emphasis>all</emphasis> destination addresses are OK:
</para>
- <para>
<screen>
permit-access localhost
</screen>
- </para>
<para>
Allow any host on the same class C subnet as www.privoxy.org access to
- nothing but www.example.com:
+ nothing but www.example.com (or other domains hosted on the same system):
</para>
- <para>
<screen>
permit-access www.privoxy.org/24 www.example.com/32
</screen>
- </para>
<para>
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 www.dirty-stuff.example.com:
+ with the exception that 192.168.45.73 may not access the IP address behind
+ www.dirty-stuff.example.com:
</para>
- <para>
<screen>
permit-access 192.168.45.64/26
deny-access 192.168.45.73 www.dirty-stuff.example.com
</screen>
+ <para>
+ 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):
+ </para>
+ <programlisting>
+ permit-access 192.0.2.0/24
+</programlisting>
+ <para>
+ This is equivalent to the following line even if listening on an
+ IPv4 address (not supported on all platforms):
</para>
+ <programlisting>
+ permit-access [::ffff:192.0.2.0]/120
+</programlisting>
</listitem>
</varlistentry>
</variablelist>
<listitem>
<para>
For content filtering, i.e. the <literal>+filter</literal> and
- <literal>+deanimate-gif</literal> actions, it is necessary that
+ <literal>+deanimate-gif</literal> actions, it is necessary that
<application>Privoxy</application> 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.
<![%config-file;[<literallayout>@@buffer-limit 4096</literallayout>]]>
</sect3>
-</sect2>
-
-<!-- ~ End section ~ -->
-
-
<!-- ~~~~~ New section ~~~~~ -->
-
-<sect2 id="forwarding">
-<title>Forwarding</title>
-
-<para>
- This feature allows routing of HTTP requests through a chain of
- multiple proxies.
- It can be used to better protect privacy and confidentiality when
- accessing specific domains by routing requests to those domains
- through an anonymous public proxy (see e.g. <ulink
- url="http://www.multiproxy.org/anon_list.htm">http://www.multiproxy.org/anon_list.htm</ulink>)
- Or to use a caching proxy to speed up browsing. Or chaining to a parent
- proxy may be necessary because the machine that <application>Privoxy</application>
- runs on has no direct Internet access.
-</para>
-
-<para>
- Also specified here are SOCKS proxies. <application>Privoxy</application>
- supports the SOCKS 4 and SOCKS 4A protocols.
-</para>
-
-<sect3 renderas="sect4" id="forward"><title>forward</title>
+<sect3 renderas="sect4" id="enable-proxy-authentication-forwarding"><title>enable-proxy-authentication-forwarding</title>
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
<para>
- To which parent HTTP proxy specific requests should be routed.
+ Whether or not proxy authentication through &my-app; should work.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type of value:</term>
<listitem>
- <para>
- <replaceable class="parameter">target_pattern</replaceable>
- <replaceable class="parameter">http_parent</replaceable>[:<replaceable class="parameter">port</replaceable>]
- </para>
- <para>
- where <replaceable class="parameter">target_pattern</replaceable> is a <link linkend="af-patterns">URL pattern</link>
- that specifies to which requests (i.e. URLs) this forward rule shall apply. Use <literal>/</literal> to
- denote <quote>all URLs</quote>.
- <replaceable class="parameter">http_parent</replaceable>[:<replaceable class="parameter">port</replaceable>]
- 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 (<literal>.</literal>) to denote <quote>no forwarding</quote>.
- </para>
+ <para>0 or 1</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para><emphasis>Unset</emphasis></para>
+ <para>0</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
<para>
- Don't use parent HTTP proxies.
+ Proxy authentication headers are removed.
</para>
</listitem>
</varlistentry>
<term>Notes:</term>
<listitem>
<para>
- If <replaceable class="parameter">http_parent</replaceable> is <quote>.</quote>, then requests are not
- forwarded to another HTTP proxy but are made directly to the web servers.
+ Privoxy itself does not support proxy authentication, but can
+ allow clients to authenticate against Privoxy's parent proxy.
</para>
<para>
- Multiple lines are OK, they are checked in sequence, and the last match wins.
+ 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.
</para>
- </listitem>
+ <para>
+ If this option is enabled the headers are forwarded.
+ </para>
+ <para>
+ Enabling this option is <emphasis>not recommended</emphasis> 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.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<![%config-file;[<literallayout>@@enable-proxy-authentication-forwarding 0</literallayout>]]>
+</sect3>
+
+<!-- ~~~~~ New section ~~~~~ -->
+<sect3 renderas="sect4" id="trusted-cgi-referer"><title>trusted-cgi-referer</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ A trusted website or webpage whose links can be followed to reach sensitive CGI pages
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>URL or URL prefix</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>Unset</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ No external pages are considered trusted referers.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ Before &my-app; accepts configuration changes through CGI pages like
+ <link linkend="client-specific-tag">client-tags</link> or the
+ <link linkend="enable-remote-toggle">remote toggle</link>, it checks
+ the Referer header to see if the request comes from a trusted source.
+ </para>
+ <para>
+ By default only the webinterface domains
+ <ulink url="http://config.privoxy.org/">config.privoxy.org</ulink>
+ and
+ <ulink url="http://p.p/">p.p</ulink>
+ are considered trustworthy.
+ Requests originating from other domains are rejected to prevent
+ third-parties from modifiying Privoxy's state by e.g. embedding
+ images that result in CGI requests.
+ </para>
+ <para>
+ In some environments it may be desirable to embed links to CGI pages
+ on external pages, for example on an Intranet homepage the Privoxy admin
+ controls.
+ </para>
+ <para>
+ The <quote>trusted-cgi-referer</quote> option can be used to add that page,
+ or the whole domain, as trusted source so the resulting requests aren't
+ rejected.
+ Requests are accepted if the specified trusted-cgi-refer is the prefix
+ of the Referer.
+ </para>
+ <para>
+ If the trusted source is supposed to access the CGI pages via
+ JavaScript the <link linkend="cors-allowed-origin">cors-allowed-origin</link>
+ option can be used.
+ </para>
+ <warning>
+ <para>
+ Declaring pages the admin doesn't control trustworthy may allow
+ malicious third parties to modify Privoxy's internal state against
+ the user's wishes and without the user's knowledge.
+ </para>
+ </warning>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<![%config-file;[<literallayout>@@#trusted-cgi-referer http://www.example.org/local-privoxy-control-page</literallayout>]]>
+</sect3>
+
+
+<!-- ~~~~~ New section ~~~~~ -->
+<sect3 renderas="sect4" id="cors-allowed-origin"><title>cors-allowed-origin</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ A trusted website which can access &my-app;'s CGI pages through JavaScript.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>URL</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>Unset</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ No external sites get access via cross-origin resource sharing.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ Modern browsers by default prevent cross-origin requests made
+ via JavaScript to &my-app;'s CGI interface even if &my-app;
+ would trust the referer because it's white listed via the
+ <link linkend="trusted-cgi-referer">trusted-cgi-referer</link>
+ directive.
+ </para>
+ <para>
+ <ulink url="https://en.wikipedia.org/wiki/Cross-origin_resource_sharing"
+ >Cross-origin resource sharing (CORS)</ulink> is a mechanism to allow
+ cross-origin requests.
+ </para>
+ <para>
+ The <quote>cors-allowed-origin</quote> option can be used to specify
+ a domain that is allowed to make requests to Privoxy CGI interface
+ via JavaScript. It is used in combination with the
+ <link linkend="trusted-cgi-referer">trusted-cgi-referer</link>
+ directive.
+ </para>
+ <warning>
+ <para>
+ Declaring domains the admin doesn't control trustworthy may allow
+ malicious third parties to modify Privoxy's internal state against
+ the user's wishes and without the user's knowledge.
+ </para>
+ </warning>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<![%config-file;[<literallayout>@@#cors-allowed-origin http://www.example.org/</literallayout>]]>
+</sect3>
+
+</sect2>
+
+<!-- ~ End section ~ -->
+
+
+<!-- ~~~~~ New section ~~~~~ -->
+
+<sect2 id="forwarding">
+<title>Forwarding</title>
+
+<para>
+ This feature allows routing of HTTP requests through a chain of
+ multiple proxies.
+</para>
+<para>
+ 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 <application>Privoxy</application> runs on has no direct Internet access.
+</para>
+<para>
+ 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 <quote>Etag</quote>
+ 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.
+</para>
+
+<para>
+ Also specified here are SOCKS proxies. <application>Privoxy</application>
+ supports the SOCKS 4 and SOCKS 4A protocols.
+</para>
+
+<sect3 renderas="sect4" id="forward"><title>forward</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ To which parent HTTP proxy specific requests should be routed.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable class="parameter">target_pattern</replaceable>
+ <replaceable class="parameter">http_parent</replaceable>[:<replaceable class="parameter">port</replaceable>]
+ </para>
+ <para>
+ where <replaceable class="parameter">target_pattern</replaceable> is a <link linkend="af-patterns">URL pattern</link>
+ that specifies to which requests (i.e. URLs) this forward rule shall apply. Use <literal>/</literal> to
+ denote <quote>all URLs</quote>.
+ <replaceable class="parameter">http_parent</replaceable>[:<replaceable class="parameter">port</replaceable>]
+ 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 (<literal>.</literal>) to denote <quote>no forwarding</quote>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para><emphasis>Unset</emphasis></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Don't use parent HTTP proxies.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ If <replaceable class="parameter">http_parent</replaceable> is <quote>.</quote>, then requests are not
+ forwarded to another HTTP proxy but are made directly to the web servers.
+ </para>
+ <para>
+ <replaceable class="parameter">http_parent</replaceable> can be a
+ numerical IPv6 address (if
+ <ulink url="http://tools.ietf.org/html/rfc3493">RFC 3493</ulink> is
+ implemented). To prevent clashes with the port delimiter, the whole IP
+ address has to be put into brackets. On the other hand a <replaceable
+ class="parameter">target_pattern</replaceable> containing an IPv6 address
+ has to be put into angle brackets (normal brackets are reserved for
+ regular expressions already).
+ </para>
+ <para>
+ Multiple lines are OK, they are checked in sequence, and the last match wins.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ Everything goes to an example parent proxy, except SSL on port 443 (which it doesn't handle):
+ </para>
+ <screen>
+ forward / parent-proxy.example.org:8080
+ forward :443 .
+</screen>
+ <para>
+ Everything goes to our example ISP's caching proxy, except for requests
+ to that ISP's sites:
+ </para>
+ <screen>
+ forward / caching-proxy.isp.example.net:8000
+ forward .isp.example.net .
+</screen>
+ <para>
+ Parent proxy specified by an IPv6 address:
+ </para>
+ <programlisting>
+ forward / [2001:DB8::1]:8000
+</programlisting>
+ <para>
+ Suppose your parent proxy doesn't support IPv6:
+ </para>
+ <programlisting>
+ forward / parent-proxy.example.org:8000
+ forward ipv6-server.example.org .
+ forward <[2-3][0-9a-f][0-9a-f][0-9a-f]:*> .
+</programlisting>
+ </listitem>
+ </varlistentry>
+</variablelist>
+</sect3>
+
+
+<!-- ~~~~~ New section ~~~~~ -->
+<sect3 renderas="sect4" id="socks"><title>
+forward-socks4, forward-socks4a, forward-socks5 and forward-socks5t</title>
+<anchor id="forward-socks4">
+<anchor id="forward-socks4a">
+
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Through which SOCKS proxy (and optionally to which parent HTTP proxy) specific requests should be routed.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable class="parameter">target_pattern</replaceable>
+ [<replaceable class="parameter">user</replaceable>:<replaceable class="parameter">pass</replaceable>@]<replaceable class="parameter">socks_proxy</replaceable>[:<replaceable class="parameter">port</replaceable>]
+ <replaceable class="parameter">http_parent</replaceable>[:<replaceable class="parameter">port</replaceable>]
+ </para>
+ <para>
+ where <replaceable class="parameter">target_pattern</replaceable> is a
+ <link linkend="af-patterns">URL pattern</link> that specifies to which
+ requests (i.e. URLs) this forward rule shall apply. Use <literal>/</literal> to
+ denote <quote>all URLs</quote>. <replaceable class="parameter">http_parent</replaceable>
+ and <replaceable class="parameter">socks_proxy</replaceable>
+ are IP addresses in dotted decimal notation or valid DNS names
+ (<replaceable class="parameter">http_parent</replaceable>
+ may be <quote>.</quote> to denote <quote>no HTTP forwarding</quote>), and the optional
+ <replaceable class="parameter">port</replaceable> parameters are TCP ports,
+ i.e. integer values from 1 to 65535. <replaceable class="parameter">user</replaceable> and
+ <replaceable class="parameter">pass</replaceable> can be used for SOCKS5 authentication if required.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para><emphasis>Unset</emphasis></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Don't use SOCKS proxies.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ Multiple lines are OK, they are checked in sequence, and the last match wins.
+ </para>
+ <para>
+ The difference between <literal>forward-socks4</literal> and <literal>forward-socks4a</literal>
+ 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.
+ </para>
+ <para>
+ With <literal>forward-socks5</literal> the DNS resolution will happen on the remote server as well.
+ </para>
+ <para>
+ <literal>forward-socks5t</literal> works like vanilla <literal>forward-socks5</literal> but
+ lets &my-app; 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.
+ </para>
+ <para>
+ <replaceable class="parameter">socks_proxy</replaceable> and
+ <replaceable class="parameter">http_parent</replaceable> can be a
+ numerical IPv6 address (if
+ <ulink url="http://tools.ietf.org/html/rfc3493">RFC 3493</ulink> is
+ implemented). To prevent clashes with the port delimiter, the whole IP
+ address has to be put into brackets. On the other hand a <replaceable
+ class="parameter">target_pattern</replaceable> containing an IPv6 address
+ has to be put into angle brackets (normal brackets are reserved for
+ regular expressions already).
+ </para>
+ <para>
+ If <replaceable class="parameter">http_parent</replaceable> is <quote>.</quote>, then requests are not
+ forwarded to another HTTP proxy but are made (HTTP-wise) directly to the web servers, albeit through
+ a SOCKS proxy.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ From the company example.com, direct connections are made to all
+ <quote>internal</quote> domains, but everything outbound goes through
+ their ISP's proxy by way of example.com's corporate SOCKS 4A gateway to
+ the Internet.
+ </para>
+ <screen>
+ forward-socks4a / socks-gw.example.com:1080 www-cache.isp.example.net:8080
+ forward .example.com .
+</screen>
+ <para>
+ A rule that uses a SOCKS 4 gateway for all destinations but no HTTP parent looks like this:
+ </para>
+ <screen>
+ forward-socks4 / socks-gw.example.com:1080 .
+</screen>
+
+ <para>
+ To connect SOCKS5 proxy which requires username/password authentication:
+ </para>
+ <screen>
+ forward-socks5 / user:pass@socks-gw.example.com:1080 .
+</screen>
+
+ <para>
+ To chain Privoxy and Tor, both running on the same system, you would use
+ something like:
+ </para>
+ <screen>
+ forward-socks5t / 127.0.0.1:9050 .
+</screen>
+ <para>
+ 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
+ <ulink url="https://torproject.org/">Tor website</ulink>.
+ </para>
+ <para>
+ The public <application>Tor</application> 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:
+ </para>
+ <screen>
+ forward 192.168.*.*/ .
+ forward 10.*.*.*/ .
+ forward 127.*.*.*/ .
+</screen>
+ <para>
+ 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 <application>Privoxy</application>
+ 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.
+ </para>
+ <para>
+ 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:
+ </para>
+ <screen>
+ forward localhost/ .
+</screen>
+
+ </listitem>
+ </varlistentry>
+</variablelist>
+</sect3>
+
+<![%user-man;[ <!-- not included in config due to length -->
+<!-- ~~~~~ New section ~~~~~ -->
+<sect3 renderas="sect4" id="advanced-forwarding-examples"><title>Advanced Forwarding Examples</title>
+
+<para>
+ If you have links to multiple ISPs that provide various special content
+ only to their subscribers, you can configure multiple <application>Privoxies</application>
+ which have connections to the respective ISPs to act as forwarders to each other, so that
+ <emphasis>your</emphasis> users can see the internal content of all ISPs.
+</para>
+
+<para>
+ 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 <application>Privoxy</application>. Their forwarding
+ configuration can look like this:
+</para>
+
+<para>
+ host-a:
+</para>
+
+ <screen>
+ forward / .
+ forward .isp-b.example.net host-b:8118
+</screen>
+
+<para>
+ host-b:
+</para>
+
+ <screen>
+ forward / .
+ forward .isp-a.example.org host-a:8118
+</screen>
+
+<para>
+ 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.
+</para>
+
+<para>
+ If you intend to chain <application>Privoxy</application> and
+ <application>squid</application> locally, then chaining as
+ <literal>browser -> squid -> privoxy</literal> is the recommended way.
+</para>
+
+<para>
+ Assuming that <application>Privoxy</application> and <application>squid</application>
+ run on the same box, your <application>squid</application> configuration could then look like this:
+</para>
+
+ <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</screen>
+
+<para>
+ You would then need to change your browser's proxy settings to <application>squid</application>'s address and port.
+ Squid normally uses port 3128. If unsure consult <literal>http_port</literal> in <filename>squid.conf</filename>.
+</para>
+
+<para>
+ 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 <literal>antivir.example.com</literal>, port 8010:
+</para>
+
+ <screen>
+ forward / .
+ forward /.*\.(exe|com|dll|zip)$ antivir.example.com:8010</screen>
+
+</sect3>
+]]>
+
+<sect3 renderas="sect4" id="forwarded-connect-retries"><title>forwarded-connect-retries</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ How often Privoxy retries if a forwarded connection request fails.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable class="parameter">Number of retries.</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para><emphasis>0</emphasis></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Connections forwarded through other proxies are treated like direct connections and no retry attempts are made.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ <replaceable class="parameter">forwarded-connect-retries</replaceable> is mainly interesting
+ for socks4a connections, where <application>Privoxy</application> 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.
+ </para>
+ <para>
+ Note that in the context of this option, <quote>forwarded connections</quote> includes all connections
+ that Privoxy forwards through other proxies. This option is not limited to the HTTP CONNECT method.
+ </para>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ forwarded-connect-retries 1
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@forwarded-connect-retries 0</literallayout>]]>
+</sect3>
+
+</sect2>
+
+<sect2 id="misc">
+<title>Miscellaneous</title>
+
+<sect3 renderas="sect4" id="accept-intercepted-requests"><title>accept-intercepted-requests</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Whether intercepted requests should be treated as valid.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>0 or 1</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para><emphasis>0</emphasis></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Only proxy requests are accepted, intercepted requests are treated as invalid.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ If you don't trust your clients and want to force them
+ to use <application>Privoxy</application>, enable this
+ option and configure your packet filter to redirect outgoing
+ HTTP connections into <application>Privoxy</application>.
+ </para>
+ <para>
+ Note that intercepting encrypted connections (HTTPS) isn't supported.
+ </para>
+ <para>
+ Make sure that <application>Privoxy's</application> own requests
+ aren't redirected as well. Additionally take care that
+ <application>Privoxy</application> can't intentionally connect
+ to itself, otherwise you could run into redirection loops if
+ <application>Privoxy's</application> listening port is reachable
+ by the outside or an attacker has access to the pages you visit.
+ </para>
+ <para>
+ If you are running Privoxy as intercepting proxy without being
+ able to intercept all client requests you may want to adjust
+ the CGI templates to make sure they don't reference content from
+ config.privoxy.org.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ accept-intercepted-requests 1
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@accept-intercepted-requests 0</literallayout>]]>
+</sect3>
+
+<sect3 renderas="sect4" id="allow-cgi-request-crunching"><title>allow-cgi-request-crunching</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Whether requests to <application>Privoxy's</application> CGI pages can be blocked or redirected.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>0 or 1</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para><emphasis>0</emphasis></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ <application>Privoxy</application> ignores block and redirect actions for its CGI pages.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ By default <application>Privoxy</application> 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.
+ </para>
+ <para>
+ Don't enable this option unless you're sure that you really need it.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ allow-cgi-request-crunching 1
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@allow-cgi-request-crunching 0</literallayout>]]>
+</sect3>
+
+<sect3 renderas="sect4" id="split-large-forms"><title>split-large-forms</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Whether the CGI interface should stay compatible with broken HTTP clients.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>0 or 1</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para><emphasis>0</emphasis></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ The CGI form generate long GET URLs.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ <application>Privoxy's</application> 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.
+ </para>
+ <para>
+ Enabling split-large-forms causes <application>Privoxy</application>
+ 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.
+ </para>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ split-large-forms 1
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@split-large-forms 0</literallayout>]]>
+</sect3>
+
+<sect3 renderas="sect4" id="keep-alive-timeout"><title>keep-alive-timeout</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Number of seconds after which an open connection will no longer be reused.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>Time in seconds.</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>None</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Connections are not kept alive.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ This option allows clients to keep the connection to &my-app;
+ alive. If the server supports it, &my-app; will keep
+ the connection to the server alive as well. Under certain
+ circumstances this may result in speed-ups.
+ </para>
+ <para>
+ By default, &my-app; 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 <ulink
+ url="#CONNECTION-SHARING">connection-sharing</ulink> option.
+ </para>
+ <para>
+ This option has no effect if <application>Privoxy</application>
+ has been compiled without keep-alive support.
+ </para>
+ <para>
+ 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 <quote>grabbing</quote> all the
+ connections the browser allows, which means connections to
+ other websites can't be opened until the connections currently
+ in use time out.
+ </para>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ keep-alive-timeout 300
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@keep-alive-timeout 5</literallayout>]]>
+</sect3>
+
+
+<sect3 renderas="sect4" id="tolerate-pipelining"><title>tolerate-pipelining</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Whether or not pipelined requests should be served.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>0 or 1.</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>None</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ If Privoxy receives more than one request at once, it terminates the
+ client connection after serving the first one.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ &my-app; currently doesn't pipeline outgoing requests,
+ thus allowing pipelining on the client connection is not
+ guaranteed to improve the performance.
+ </para>
+ <para>
+ By default &my-app; tries to discourage clients from pipelining
+ by discarding aggressively pipelined requests, which forces the
+ client to resend them through a new connection.
+ </para>
+ <para>
+ This option lets &my-app; tolerate pipelining. Whether or not
+ that improves performance mainly depends on the client configuration.
+ </para>
+ <para>
+ If you are seeing problems with pages not properly loading,
+ disabling this option could work around the problem.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ tolerate-pipelining 1
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@tolerate-pipelining 1</literallayout>]]>
+</sect3>
+
+
+<sect3 renderas="sect4" id="default-server-timeout"><title>default-server-timeout</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Assumed server-side keep-alive timeout if not specified by the server.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>Time in seconds.</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>None</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Connections for which the server didn't specify the keep-alive
+ timeout are not reused.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ Enabling this option significantly increases the number of connections
+ that are reused, provided the <ulink
+ url="#KEEP-ALIVE-TIMEOUT">keep-alive-timeout</ulink> option
+ is also enabled.
+ </para>
+ <para>
+ While it also increases the number of connections problems
+ when &my-app; tries to reuse a connection that already has
+ been closed on the server side, or is closed while &my-app;
+ 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, &my-app; will simply
+ close the connection and the client is supposed to retry the
+ request without bothering the user.
+ </para>
+ <para>
+ Enabling this option is therefore only recommended if the
+ <ulink
+ url="#CONNECTION-SHARING">connection-sharing</ulink> option
+ is disabled.
+ </para>
+ <para>
+ It is an error to specify a value larger than the <ulink
+ url="#KEEP-ALIVE-TIMEOUT">keep-alive-timeout</ulink> value.
+ </para>
+ <para>
+ This option has no effect if <application>Privoxy</application>
+ has been compiled without keep-alive support.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ default-server-timeout 60
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@#default-server-timeout 60</literallayout>]]>
+</sect3>
+
+
+<sect3 renderas="sect4" id="connection-sharing"><title>connection-sharing</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Whether or not outgoing connections that have been kept alive
+ should be shared between different incoming connections.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>0 or 1</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>None</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Connections are not shared.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ This option has no effect if <application>Privoxy</application>
+ has been compiled without keep-alive support, or if it's disabled.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ Note that reusing connections doesn't necessary cause speedups.
+ There are also a few privacy implications you should be aware of.
+ </para>
+ <para>
+ 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 &my-app;
+ and the server unless the client's request hasn't been completed yet.
+ </para>
+ <para>
+ If the outgoing connection is idle, it will not be closed until either
+ <application>Privoxy's</application> or the server's timeout is reached.
+ While it's open, the server knows that the system running &my-app; is still
+ there.
+ </para>
+ <para>
+ 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.
+ </para>
+ <para>
+ 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 &my-app; to keep outgoing connections alive even if the client
+ itself doesn't support it.
+ </para>
+ <para>
+ 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.
+ </para>
+ <para>
+ This option should only be used by experienced users who
+ understand the risks and can weight them against the benefits.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ connection-sharing 1
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@#connection-sharing 1</literallayout>]]>
+</sect3>
+
+
+<sect3 renderas="sect4" id="socket-timeout"><title>socket-timeout</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Number of seconds after which a socket times out if
+ no data is received.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>Time in seconds.</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>None</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ A default value of 300 seconds is used.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ socket-timeout 300
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@socket-timeout 300</literallayout>]]>
+</sect3>
+
+
+<sect3 renderas="sect4" id="max-client-connections"><title>max-client-connections</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Maximum number of client connections that will be served.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>Positive number.</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>128</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Connections are served until a resource limit is reached.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ &my-app; creates one thread (or process) for every incoming client
+ connection that isn't rejected based on the access control settings.
+ </para>
+ <para>
+ If the system is powerful enough, &my-app; 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 &my-app; would
+ require under heavy load.
+ </para>
+ <para>
+ Configuring &my-app; 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 &my-app; isn't the only application running on the system,
+ you may actually want to limit the resources used by &my-app;.
+ </para>
+ <para>
+ If &my-app; 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 &my-app;.
+ </para>
+ <para>
+ Obviously using this option only makes sense if you choose a limit
+ below the one enforced by the operating system.
+ </para>
+ <para>
+ One most POSIX-compliant systems &my-app; 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 &my-app; with a different FD_SETSIZE limit.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ max-client-connections 256
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@#max-client-connections 256</literallayout>]]>
+</sect3>
+
+
+<sect3 renderas="sect4" id="listen-backlog"><title>listen-backlog</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Connection queue length requested from the operating system.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>Number.</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>128</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ A connection queue length of 128 is requested from the operating system.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ Under high load incoming connection may queue up before Privoxy
+ gets around to serve them. The queue length is limitted by the
+ operating system. Once the queue is full, additional connections
+ are dropped before Privoxy can accept and serve them.
+ </para>
+ <para>
+ Increasing the queue length allows Privoxy to accept more
+ incomming connections that arrive roughly at the same time.
+ </para>
+ <para>
+ Note that Privoxy can only request a certain queue length,
+ whether or not the requested length is actually used depends
+ on the operating system which may use a different length instead.
+ </para>
+ <para>
+ On many operating systems a limit of -1 can be specified to
+ instruct the operating system to use the maximum queue length
+ allowed. Check the listen man page to see if your platform allows this.
+ </para>
+ <para>
+ On some platforms you can use "netstat -Lan -p tcp" to see the effective
+ queue length.
+ </para>
+ <para>
+ Effectively using a value above 128 usually requires changing
+ the system configuration as well. On FreeBSD-based system the
+ limit is controlled by the kern.ipc.soacceptqueue sysctl.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ listen-backlog 4096
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@#listen-backlog -1</literallayout>]]>
+</sect3>
+
+
+<sect3 renderas="sect4" id="enable-accept-filter"><title>enable-accept-filter</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Whether or not Privoxy should use an accept filter
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>0 or 1</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>0</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ No accept filter is enabled.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ Accept filters reduce the number of context switches by not
+ passing sockets for new connections to Privoxy until a complete
+ HTTP request is available.
+ </para>
+ <para>
+ As a result, Privoxy can process the whole request right away
+ without having to wait for additional data first.
+ </para>
+ <para>
+ For this option to work, Privoxy has to be compiled with
+ FEATURE_ACCEPT_FILTER and the operating system has to support
+ it (which may require loading a kernel module).
+ </para>
+ <para>
+ Currently accept filters are only supported on FreeBSD-based
+ systems. Check the
+ <ulink url="https://www.freebsd.org/cgi/man.cgi?query=accf_http">accf_http(9)
+ man page</ulink>
+ to learn how to enable the support in the operating system.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ enable-accept-filter 1
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@#enable-accept-filter 1</literallayout>]]>
+</sect3>
+
+
+<sect3 renderas="sect4" id="handle-as-empty-doc-returns-ok"><title>handle-as-empty-doc-returns-ok</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ The status code Privoxy returns for pages blocked with
+ <!-- URL will only end up in the user manual so the relative link should work. -->
+ <literal><ulink url="actions-file.html#HANDLE-AS-EMPTY-DOCUMENT">+handle-as-empty-document</ulink></literal>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>0 or 1</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>0</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Privoxy returns a status 403(forbidden) for all blocked pages.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if set:</term>
+ <listitem>
+ <para>
+ Privoxy returns a status 200(OK) for pages blocked with +handle-as-empty-document
+ and a status 403(Forbidden) for all other blocked pages.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ This directive was added as a work-around for Firefox bug 492459:
+ <quote>Websites are no longer rendered if SSL requests for JavaScripts are blocked by a proxy.</quote>
+ (<ulink url="https://bugzilla.mozilla.org/show_bug.cgi?id=492459">
+ https://bugzilla.mozilla.org/show_bug.cgi?id=492459</ulink>),
+ 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.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@#handle-as-empty-doc-returns-ok 1</literallayout>]]>
+</sect3>
+
+
+<sect3 renderas="sect4" id="enable-compression"><title>enable-compression</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Whether or not buffered content is compressed before delivery.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>0 or 1</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>0</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Privoxy does not compress buffered content.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if set:</term>
+ <listitem>
+ <para>
+ Privoxy compresses buffered content before delivering it to the client,
+ provided the client supports it.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ This directive is only supported if Privoxy has been compiled with
+ FEATURE_COMPRESSION, which should not to be confused with FEATURE_ZLIB.
+ </para>
+ <para>
+ 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.
+ </para>
+ <para>
+ Privoxy will not compress buffered content below a certain length.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@#enable-compression 1</literallayout>]]>
+</sect3>
+
+
+<sect3 renderas="sect4" id="compression-level"><title>compression-level</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ The compression level that is passed to the zlib library when compressing buffered content.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>Positive number ranging from 0 to 9.</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>1</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ 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.
+ </para>
+ <para>
+ If compression is disabled, the compression level is irrelevant.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <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
+</screen>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@#compression-level 1</literallayout>]]>
+</sect3>
+
+
+<sect3 renderas="sect4" id="client-header-order"><title>client-header-order</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ The order in which client headers are sorted before forwarding them.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>Client header names delimited by spaces or tabs</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>None</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ By default &my-app; 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.
+ </para>
+ <para>
+ The header order can be used to fingerprint client requests
+ independently of other headers like the User-Agent.
+ </para>
+ <para>
+ 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.
+ </para>
+ <para>
+ Note that sorting headers in an uncommon way will make fingerprinting
+ actually easier. Encrypted headers are not affected by this directive.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@#client-header-order Host \
+ User-Agent \
+ Accept \
+ Accept-Language \
+ Accept-Encoding \
+ Proxy-Connection \
+ Referer \
+ Cookie \
+ DNT \
+ If-Modified-Since \
+ Cache-Control \
+ Content-Length \
+ Content-Type
+</literallayout>]]>
+</sect3>
+
+
+<sect3 renderas="sect4" id="client-specific-tag"><title>client-specific-tag</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ The name of a tag that will always be set for clients that
+ requested it through the webinterface.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>Tag name followed by a description that will be shown in the webinterface</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>None</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <warning>
+ <para>
+ This is an experimental feature. The syntax is likely to change
+ in future versions.
+ </para>
+ </warning>
+ <para>
+ Client-specific tags allow Privoxy admins to create different
+ profiles and let the users chose which one they want without
+ impacting other users.
+ </para>
+ <para>
+ 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
+ <link linkend="enable-remote-toggle">enable-remote-toggle feature</link>
+ 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.
+ </para>
+ <para>
+ 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
+ <ulink url="actions-file.html#CLIENT-TAG-PATTERN">CLIENT-TAG</ulink> 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!
+ </para>
+ <para>
+ 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.
+ </para>
+ <para>
+ Clients can request tags to be set by using the CGI interface <ulink
+ url="http://config.privoxy.org/client-tags">http://config.privoxy.org/client-tags</ulink>.
+ 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.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <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
+</screen>
+ </listitem>
+ </varlistentry>
+</variablelist>
+</sect3>
+
+<!-- ~ End section ~ -->
+
+<sect3 renderas="sect4" id="client-tag-lifetime"><title>client-tag-lifetime</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ How long a temporarily enabled tag remains enabled.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>Time in seconds.</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>60</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <warning>
+ <para>
+ This is an experimental feature. The syntax is likely to change
+ in future versions.
+ </para>
+ </warning>
+ <para>
+ 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.
+ </para>
+ <para>
+ The CGI interface <ulink
+ url="http://config.privoxy.org/client-tags">http://config.privoxy.org/client-tags</ulink>
+ therefore provides a "enable this tag temporarily" option.
+ If it is used, the tag will be set until the client-tag-lifetime
+ is over.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <screen>
+ # Increase the time to life for temporarily enabled tags to 3 minutes
+ client-tag-lifetime 180
+</screen>
+ </listitem>
+ </varlistentry>
+</variablelist>
+</sect3>
+
+<!-- ~ End section ~ -->
+
+<sect3 renderas="sect4" id="trust-x-forwarded-for"><title>trust-x-forwarded-for</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Whether or not Privoxy should use IP addresses specified with the X-Forwarded-For header
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>0 or one</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>0</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <warning>
+ <para>
+ This is an experimental feature. The syntax is likely to change
+ in future versions.
+ </para>
+ </warning>
+ <para>
+ If clients reach Privoxy through another proxy, for example a load
+ balancer, Privoxy can't tell the client's IP address from the connection.
+ If multiple clients use the same proxy, they will share the same
+ client tag settings which is usually not desired.
+ </para>
+ <para>
+ This option lets Privoxy use the X-Forwarded-For header value as
+ client IP address. If the proxy sets the header, multiple clients
+ using the same proxy do not share the same client tag settings.
+ </para>
+ <para>
+ This option should only be enabled if Privoxy can only be reached
+ through a proxy and if the proxy can be trusted to set the header
+ correctly. It is recommended that ACL are used to make sure only
+ trusted systems can reach Privoxy.
+ </para>
+ <para>
+ If access to Privoxy isn't limited to trusted systems, this option
+ would allow malicious clients to change the client tags for other
+ clients or increase Privoxy's memory requirements by registering
+ lots of client tag settings for clients that don't exist.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <screen>
+ # Allow systems that can reach Privoxy to provide the client
+ # IP address with a X-Forwarded-For header.
+ trust-x-forwarded-for 1
+</screen>
+ </listitem>
+ </varlistentry>
+</variablelist>
+</sect3>
+
+<!-- ~ End section ~ -->
+
+<!-- ~~~~~ New section ~~~~~ -->
+
+<sect3 renderas="sect4" id="receive-buffer-size"><title>receive-buffer-size</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ The size of the buffer Privoxy uses to receive data from the server.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ <replaceable>Size in bytes</replaceable>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para>5000</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ Increasing the receive-buffer-size increases Privoxy's memory usage but
+ can lower the number of context switches and thereby reduce the
+ cpu usage and potentially increase the throughput.
+ </para>
+ <para>
+ This is mostly relevant for fast network connections and
+ large downloads that don't require filtering.
+ </para>
+ <para>
+ Reducing the buffer size reduces the amount of memory Privoxy
+ needs to handle the request but increases the number of systemcalls
+ and may reduce the throughput.
+ </para>
+ <para>
+ A dtrace command like:
+ <quote>sudo dtrace -n 'syscall::read:return /execname == "privoxy"/ { @[execname] = llquantize(arg0, 10, 0, 5, 20); @m = max(arg0)}'</quote>
+ can be used to properly tune the receive-buffer-size.
+ On systems without dtrace, strace or truss may be used as
+ less convenient alternatives.
+ </para>
+ <para>
+ If the buffer is too large it will increase Privoxy's memory
+ footprint without any benefit. As the memory is (currently)
+ cleared before using it, a buffer that is too large can
+ actually reduce the throughput.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <screen>
+ # Increase the receive buffer size
+ receive-buffer-size 32768
+</screen>
+ </listitem>
+ </varlistentry>
+</variablelist>
+</sect3>
+
+<!-- ~ End section ~ -->
+
+</sect2>
+
+
+<sect2 id="tls">
+<title>TLS/SSL</title>
+
+<!-- ~~~~~ New section ~~~~~ -->
+
+<sect3 renderas="sect4" id="ca-directory"><title>ca-directory</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ Directory with the CA key, the CA certificate and the trusted CAs file.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ Text
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para><emphasis>Empty string</emphasis></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Default value is used.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ This directive specifies the directory where the
+ CA key, the CA certificate and the trusted CAs file
+ are located.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ ca-directory /usr/local/etc/privoxy/CA
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@#ca-directory /usr/local/etc/privoxy/CA</literallayout>]]>
+</sect3>
+
+<!-- ~ End section ~ -->
+
+<!-- ~~~~~ New section ~~~~~ -->
+
+<sect3 renderas="sect4" id="ca-cert-file"><title>ca-cert-file</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ The CA certificate file in ".crt" format.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ Text
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para><emphasis>cacert.crt</emphasis></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Default value is used.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ This directive specifies the name of the CA certificate file
+ in ".crt" format.
+ </para>
+ <para>
+ It can be generated with: openssl req -new -x509 -extensions v3_ca -keyout cakey.pem -out cacert.crt -days 3650
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ ca-cert-file root.crt
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@#ca-cert-file cacert.crt</literallayout>]]>
+</sect3>
+
+<!-- ~ End section ~ -->
+
+<!-- ~~~~~ New section ~~~~~ -->
+
+<sect3 renderas="sect4" id="ca-key-file"><title>ca-key-file</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ The CA key file in ".pem" format.
+ </para>
+ </listitem>
</varlistentry>
<varlistentry>
- <term>Examples:</term>
+ <term>Type of value:</term>
<listitem>
<para>
- Everything goes to an example anonymizing proxy, except SSL on port 443 (which it doesn't handle):
+ Text
</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para><emphasis>cacert.pem</emphasis></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
<para>
- <screen>
- forward / anon-proxy.example.org:8080
- forward :443 .
-</screen>
+ Default value is used.
</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
<para>
- Everything goes to our example ISP's caching proxy, except for requests
- to that ISP's sites:
+ This directive specifies the name of the CA key file
+ in ".pem" format. See the <ulink url="#CA-CERT-FILE">ca-cert-file</ulink>
+ for a command to generate it.
</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
<para>
- <screen>
- forward / caching-proxy.example-isp.net:8000
- forward .example-isp.net .
-</screen>
+ ca-key-file cakey.pem
</para>
</listitem>
</varlistentry>
</variablelist>
+<![%config-file;[<literallayout>@@#ca-key-file root.pem</literallayout>]]>
</sect3>
+<!-- ~ End section ~ -->
<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="socks"><title>
-forward-socks4 and forward-socks4a</title>
-<anchor id="forward-socks4">
-<anchor id="forward-socks4a">
+<sect3 renderas="sect4" id="ca-password"><title>ca-password</title>
<variablelist>
<varlistentry>
<term>Specifies:</term>
<listitem>
<para>
- Through which SOCKS proxy (and to which parent HTTP proxy) specific requests should be routed.
+ The password for the CA keyfile.
</para>
</listitem>
</varlistentry>
<term>Type of value:</term>
<listitem>
<para>
- <replaceable class="parameter">target_pattern</replaceable>
- <replaceable class="parameter">socks_proxy</replaceable>[:<replaceable class="parameter">port</replaceable>]
- <replaceable class="parameter">http_parent</replaceable>[:<replaceable class="parameter">port</replaceable>]
- </para>
- <para>
- where <replaceable class="parameter">target_pattern</replaceable> is a <link linkend="af-patterns">URL pattern</link>
- that specifies to which requests (i.e. URLs) this forward rule shall apply. Use <literal>/</literal> to
- denote <quote>all URLs</quote>.
- <replaceable class="parameter">http_parent</replaceable> and <replaceable class="parameter">socks_proxy</replaceable>
- are IP addresses in dotted decimal notation or valid DNS names (<replaceable class="parameter">http_parent</replaceable>
- may be <quote>.</quote> to denote <quote>no HTTP forwarding</quote>), and the optional
- <replaceable class="parameter">port</replaceable> parameters are TCP ports, i.e. integer values from 1 to 64535
+ Text
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Default value:</term>
<listitem>
- <para><emphasis>Unset</emphasis></para>
+ <para><emphasis>Empty string</emphasis></para>
</listitem>
</varlistentry>
<varlistentry>
<term>Effect if unset:</term>
<listitem>
<para>
- Don't use SOCKS proxies.
+ Default value is used.
</para>
</listitem>
</varlistentry>
<term>Notes:</term>
<listitem>
<para>
- Multiple lines are OK, they are checked in sequence, and the last match wins.
+ This directive specifies the password for the CA keyfile
+ that is used when Privoxy generates certificates for intercepted
+ requests.
</para>
<para>
- The difference between <literal>forward-socks4</literal> and <literal>forward-socks4a</literal>
- 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.
+ Note that the password is shown on the CGI page so don't
+ reuse an important one.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ ca-password blafasel
</para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@#ca-password swordfish</literallayout>]]>
+</sect3>
+
+<!-- ~ End section ~ -->
+
+<!-- ~~~~~ New section ~~~~~ -->
+
+<sect3 renderas="sect4" id="certificate-directory"><title>certificate-directory</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
<para>
- If <replaceable class="parameter">http_parent</replaceable> is <quote>.</quote>, then requests are not
- forwarded to another HTTP proxy but are made (HTTP-wise) directly to the web servers, albeit through
- a SOCKS proxy.
+ Directory to safe generated keys and certificates.
</para>
</listitem>
</varlistentry>
<varlistentry>
- <term>Examples:</term>
+ <term>Type of value:</term>
<listitem>
<para>
- From the company example.com, direct connections are made to all
- <quote>internal</quote> domains, but everything outbound goes through
- their ISP's proxy by way of example.com's corporate SOCKS 4A gateway to
- the Internet.
+ Text
</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para><emphasis>./certs</emphasis></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
<para>
- <screen>
- forward-socks4a / socks-gw.example.com:1080 www-cache.example-isp.net:8080
- forward .example.com .
-</screen>
+ Default value is used.
</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
<para>
- A rule that uses a SOCKS 4 gateway for all destinations but no HTTP parent looks like this:
+ This directive specifies the directory where generated
+ TLS/SSL keys and certificates are saved.
</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
<para>
- <screen>
- forward-socks4 / socks-gw.example.com:1080 .
-</screen>
+ certificate-directory /usr/local/var/privoxy/certs
</para>
</listitem>
</varlistentry>
</variablelist>
+<![%config-file;[<literallayout>@@#certificate-directory /usr/local/var/privoxy/certs</literallayout>]]>
</sect3>
-<![%user-man;[ <!-- not included in config due to length -->
-<!-- ~~~~~ New section ~~~~~ -->
-<sect3 renderas="sect4" id="advanced-forwarding-examples"><title>Advanced Forwarding Examples</title>
-
-<para>
- If you have links to multiple ISPs that provide various special content
- only to their subscribers, you can configure multiple <application>Privoxies</application>
- which have connections to the respective ISPs to act as forwarders to each other, so that
- <emphasis>your</emphasis> users can see the internal content of all ISPs.
-</para>
-
-<para>
- Assume that host-a has a PPP connection to isp-a.net. And host-b has a PPP connection to
- isp-b.net. Both run <application>Privoxy</application>. Their forwarding
- configuration can look like this:
-</para>
-
-<para>
- host-a:
-</para>
-
-<para>
- <screen>
- forward / .
- forward .isp-b.net host-b:8118
-</screen>
-</para>
-
-<para>
- host-b:
-</para>
-
-<para>
- <screen>
- forward / .
- forward .isp-a.net host-a:8118
-</screen>
-</para>
-
-<para>
- 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.
-</para>
-
-<para>
- If you intend to chain <application>Privoxy</application> and
- <application>squid</application> locally, then chain as
- <literal>browser -> squid -> privoxy</literal> is the recommended way.
-</para>
-
-<para>
- Assuming that <application>Privoxy</application> and <application>squid</application>
- run on the same box, your <application>squid</application> configuration could then look like this:
-</para>
-
-<para>
- <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</screen>
-</para>
-
-<para>
- You would then need to change your browser's proxy settings to <application>squid</application>'s address and port.
- Squid normally uses port 3128. If unsure consult <literal>http_port</literal> in <filename>squid.conf</filename>.
-</para>
-
-<para>
- You could just as well decide to only forward requests for Windows executables through
- a virus-scanning parent proxy, say, on <literal>antivir.example.com</literal>, port 8010:
-</para>
+<!-- ~ End section ~ -->
-<para>
- <screen>
- forward / .
- forward /.*\.(exe|com|dll|zip)$ antivir.example.com:8010</screen>
-</para>
+<!-- ~~~~~ New section ~~~~~ -->
+<sect3 renderas="sect4" id="trusted-cas-file"><title>trusted-cas-file</title>
+<variablelist>
+ <varlistentry>
+ <term>Specifies:</term>
+ <listitem>
+ <para>
+ The trusted CAs file in ".pem" format.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Type of value:</term>
+ <listitem>
+ <para>
+ File name relative to ca-directory
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Default value:</term>
+ <listitem>
+ <para><emphasis>trustedCAs.pem</emphasis></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Effect if unset:</term>
+ <listitem>
+ <para>
+ Default value is used.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Notes:</term>
+ <listitem>
+ <para>
+ This directive specifies the trusted CAs file that is used when validating
+ certificates for intercepted TLS/SSL request.
+ </para>
+ <para>
+ An example file can be downloaded from
+ <ulink url="https://curl.haxx.se/ca/cacert.pem">https://curl.haxx.se/ca/cacert.pem</ulink>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Examples:</term>
+ <listitem>
+ <para>
+ trusted-cas-file trusted_cas_file.pem
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<![%config-file;[<literallayout>@@#trusted-cas-file trustedCAs.pem</literallayout>]]>
</sect3>
-]]>
-
-</sect2>
<!-- ~ End section ~ -->
+</sect2>
<!-- ~~~~~ New section ~~~~~ -->
<![%config-file;[<literallayout>@@#activity-animation 1</literallayout>]]>
<![%user-man;[
-<para>
- <literal>
- <msgtext>
<literallayout>
<emphasis>activity-animation 1</emphasis>
- </literallayout>
- </msgtext>
- </literal>
-</para>
+</literallayout>
]]>
<anchor id="log-messages">
<![%config-file;[<para>@@</para>]]> <!-- for spacing -->
<para>
If <quote>log-messages</quote> is set to 1,
- <application>Privoxy</application> will log messages to the console
- window:
+ <application>Privoxy</application> copies log messages to the console
+ window.
+ The log detail depends on the <link linkend="debug">debug</link> directive.
</para>
<![%config-file;[<literallayout>@@#log-messages 1</literallayout>]]>
<![%user-man;[
-<para>
- <literal>
- <msgtext>
<literallayout>
<emphasis>log-messages 1</emphasis>
- </literallayout>
- </msgtext>
- </literal>
-</para>
+</literallayout>
]]>
<anchor id="log-buffer-size">
<![%config-file;[<para>@@</para>]]> <!-- for spacing -->
-<para>
+<para>
If <quote>log-buffer-size</quote> 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 <quote>log-max-lines</quote> (see below).
<![%config-file;[<literallayout>@@#log-buffer-size 1</literallayout>]]>
<![%user-man;[
-<para>
- <literal>
- <msgtext>
<literallayout>
<emphasis>log-buffer-size 1</emphasis>
- </literallayout>
- </msgtext>
- </literal>
-</para>
+</literallayout>
]]>
<anchor id="log-max-lines">
<![%config-file;[<literallayout>@@#log-max-lines 200</literallayout>]]>
<![%user-man;[
-<para>
- <literal>
- <msgtext>
<literallayout>
<emphasis>log-max-lines 200</emphasis>
- </literallayout>
- </msgtext>
- </literal>
-</para>
+</literallayout>
]]>
<anchor id="log-highlight-messages">
<![%config-file;[<literallayout>@@#log-highlight-messages 1</literallayout>]]>
<![%user-man;[
-<para>
- <literal>
- <msgtext>
<literallayout>
<emphasis>log-highlight-messages 1</emphasis>
- </literallayout>
- </msgtext>
- </literal>
-</para>
+</literallayout>
]]>
<anchor id="log-font-name">
<![%config-file;[<literallayout>@@#log-font-name Comic Sans MS</literallayout>]]>
<![%user-man;[
-<para>
- <literal>
- <msgtext>
<literallayout>
<emphasis>log-font-name Comic Sans MS</emphasis>
- </literallayout>
- </msgtext>
- </literal>
-</para>
+</literallayout>
]]>
<anchor id="log-font-size">
<![%config-file;[<literallayout>@@#log-font-size 8</literallayout>]]>
<![%user-man;[
-<para>
- <literal>
- <msgtext>
<literallayout>
<emphasis>log-font-size 8</emphasis>
- </literallayout>
- </msgtext>
- </literal>
-</para>
+</literallayout>
]]>
<anchor id="show-on-task-bar">
<![%config-file;[<para>@@</para>]]> <!-- for spacing -->
-<para>
+<para>
<quote>show-on-task-bar</quote> controls whether or not
<application>Privoxy</application> will appear as a button on the Task bar
when minimized:
<![%config-file;[<literallayout>@@#show-on-task-bar 0</literallayout>]]>
<![%user-man;[
-<para>
- <literal>
- <msgtext>
<literallayout>
<emphasis>show-on-task-bar 0</emphasis>
- </literallayout>
- </msgtext>
- </literal>
-</para>
+</literallayout>
]]>
<anchor id="close-button-minimizes">
<![%config-file;[<literallayout>@@#close-button-minimizes 1</literallayout>]]>
<![%user-man;[
-<para>
- <literal>
- <msgtext>
<literallayout>
<emphasis>close-button-minimizes 1</emphasis>
- </literallayout>
- </msgtext>
- </literal>
-</para>
+</literallayout>
]]>
<anchor id="hide-console">
<para>
The <quote>hide-console</quote> option is specific to the MS-Win console
version of <application>Privoxy</application>. If this option is used,
- <application>Privoxy</application> will disconnect from and hide the
+ <application>Privoxy</application> will disconnect from and hide the
command console.
</para>
<![%config-file;[<literallayout>@@#hide-console</literallayout>]]>
<![%user-man;[
-<para>
- <literal>
- <msgtext>
<literallayout>
#<emphasis>hide-console</emphasis>
- </literallayout>
- </msgtext>
- </literal>
-</para>
+</literallayout>
]]>
</sect2>
projects / privoxy.git / blobdiff