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X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=blobdiff_plain;f=doc%2Fsource%2Ffaq.sgml;h=38f3cb55ba1dcdaa2c1895e89572a978d9e821d3;hp=86f11e003fa625b6149c9de6abcdbff5d8684e7b;hb=fffc14960c46cad19117f5d07aa16d4a03a0c862;hpb=11ef8a844ec09f395b7f69db0f90f71bc19c8a4f diff --git a/doc/source/faq.sgml b/doc/source/faq.sgml index 86f11e00..38f3cb55 100644 --- a/doc/source/faq.sgml +++ b/doc/source/faq.sgml @@ -8,10 +8,10 @@ - - - - + + + + @@ -21,15 +21,11 @@ Privoxy"> ]> - Copyright &my-copy; 2001-2014 by - Privoxy Developers + Copyright &my-copy; 2001-2020 by + Privoxy Developers -$Id: faq.sgml,v 2.118 2016/03/06 11:32:06 fabiankeil Exp $ - @@ -135,14 +125,11 @@ Hal. Please note that this document is a work in progress. This copy represents the state at the release of version &p-version;. You can find the latest version of the document at http://www.privoxy.org/faq/. + url="https://www.privoxy.org/faq/">https://www.privoxy.org/faq/. Please see the Contact section if you want to contact the developers. - - - @@ -478,8 +465,8 @@ warranty? Registration? So first thing, subscribe to the Privoxy Users - or the Privoxy + url="https://lists.privoxy.org/mailman/listinfo/privoxy-users">Privoxy Users + or the Privoxy Developers mailing list, join the discussion, help out other users, provide general feedback or report problems you noticed. @@ -494,7 +481,7 @@ warranty? Registration? While it is partly out of date, it's still worth reading. - Our TODO list + Our TODO list may be of interest to you as well. Please let us know if you want to work on one of the items listed. @@ -503,7 +490,7 @@ warranty? Registration? Would you like to donate? Donations are welcome. Our - TODO list + TODO list is rather long and being able to pay one (or more) developers to work on Privoxy would make a huge difference, even if it was only for a couple of weeks. Donations may also be used for Privoxy-related travel expenses (for example to attend conferences), @@ -512,44 +499,78 @@ warranty? Registration? Privoxy is an associated - project of Software + project of Software in the Public Interest (SPI), which allows us to receive - tax-deductible donations in the United States. If you want to donate through - SPI, please use SPI's donation page - to see what the options are. + tax-deductible donations in the United States. + You can donate via Paypal + and Click & Pledge. + For details, please have a look at + SPI's general donation page. - You can also donate to Privoxy using a bank account or a "Paypal" address: + If you have any questions regarding donations please mail to either the + public user mailing list or, if it's a private matter, to + Fabian Keil (Privoxy's SPI liaison) + directly. - - Name on account: Zwiebelfreunde e.V. - IBAN: DE95430609671126825604 - BIC: GENODEM1GLS - Bank: GLS Bank - - - "Paypal" address: privoxy@zwiebelfreunde.de - + + + @@ -638,7 +659,6 @@ special I have to do now? details. You should also flush your browser's memory and disk cache to get rid of any cached junk items, and remove any stored cookies. - @@ -701,9 +721,9 @@ All the ads are there. What's wrong? Privoxy is not running at all. Check the log file. For instructions on starting Privoxy and browser configuration, - see the chapter + see the chapter on starting Privoxy in the - User Manual. + User Manual. @@ -716,9 +736,9 @@ Privoxy is running and being used. First, make sure that Privoxy is really running and being used by visiting http://p.p/. You should see the Privoxy main page. If not, see - the chapter + the chapter on starting Privoxy in the - User Manual. + User Manual. @@ -815,7 +835,7 @@ way to do this? - + There are several different <quote>actions</quote> files. What are the differences? @@ -828,17 +848,16 @@ the differences? Where can I get updated Actions Files? Based on your feedback and the continuing development, updates of - default.action will be - made available from time to time on the files section of - our project page. + default.action are available from + git. If you wish to receive an email notification whenever we release updates of Privoxy or the actions file, subscribe - to our announce mailing list, ijbswa-announce@lists.sourceforge.net. + url="https://lists.privoxy.org/mailman/listinfo/privoxy-announce">subscribe + to our announce mailing list, privoxy-announce@lists.privoxy.org. @@ -887,12 +906,10 @@ the differences? for them in the user.action file. An example for yahoo might look like: - # Allow all cookies for Yahoo login: # { -crunch-incoming-cookies -crunch-outgoing-cookies -session-cookies-only } .login.yahoo.com - These kinds of sites are often quite complex and heavy with Javascript and @@ -901,13 +918,11 @@ the differences? url="../user-manual/actions-file.html#ALIASES">alias just for such sticky situations: - # Gmail is a _fragile_ site: # { fragile } # Gmail is ... mail.google.com - Be sure to flush your browser's caches whenever making these kinds of changes, just to make sure the changes take. @@ -1036,7 +1051,7 @@ with a browser? Does that not raise security issues? If you intend to develop your own filters, you might want to have a look at Privoxy-Filter-Test. + url="https://www.fabiankeil.de/sourcecode/pft/">Privoxy-Filter-Test. @@ -1058,10 +1073,8 @@ with a browser? Does that not raise security issues? should look like: - listen-address 192.168.1.1:8118 - Save the file, and restart Privoxy. Configure @@ -1073,10 +1086,8 @@ with a browser? Does that not raise security issues? all available interfaces: - listen-address :8118 - And then use Privoxy's @@ -1170,18 +1181,12 @@ instead of the checkerboard image. Why and how do I get rid of this? Can Privoxy run as a service on Win2K/NT/XP? -Windows service - functionality. See + Yes. Full Windows service + functionality was introduced in Privoxy 3.0.5. + See the User Manual for details on how to install and configure Privoxy as a service. - - Earlier ]]>3.x versions could run as a system service using srvany.exe. - See the discussion at http://sourceforge.net/tracker/?func=detail&atid=361118&aid=485617&group_id=11118, - for details, and a sample configuration. - @@ -1285,7 +1290,8 @@ and thus avoid individual browser configuration? For a good discussion of some of the issues involved (including privacy and security issues), see - http://sourceforge.net/tracker/?func=detail&atid=211118&aid=629518&group_id=11118. + https://sourceforge.net/p/ijbswa/support-requests/107/. @@ -1305,7 +1311,8 @@ and thus avoid individual browser configuration? amount of guesswork. It is not realistic to catch all of these short of disabling Javascript, which would break many sites. And lastly, if the cookies are embedded in a HTTPS/SSL secure session via Javascript, they are beyond - Privoxy's reach. + Privoxy's reach unless you enable + https-inspection. All in all, &my-app; can help manage cookies in general, can help minimize @@ -1349,11 +1356,9 @@ and thus avoid individual browser configuration? To disable all cookie actions, so that cookies are allowed unrestricted, both in and out, for example.com: - { -crunch-incoming-cookies -crunch-outgoing-cookies -session-cookies-only -filter{content-cookies} } .example.com - Place the above in user.action. Note that some of these may be off by default anyway, so this might be redundant, but there is no harm @@ -1444,16 +1449,13 @@ and thus avoid individual browser configuration? can very easily over-ride all blocking with the following very simple rule in your user.action: - # Unblock everybody, everywhere { -block } / # UN-Block *all* URLs - Or even a more comprehensive reversing of various ad related actions: - # Unblock everybody, everywhere, and turn off appropriate filtering, etc { -block \ @@ -1462,7 +1464,6 @@ and thus avoid individual browser configuration? allow-popups \ } / # UN-Block *all* URLs and allow ads - This last action in this compound statement, allow-popups, is an during upgrades. You can, however, create completely new templates, place them in another directory and specify the alternate path in the main config. For details, have a look at the templdir option. + url="../user-manual/config.html#TEMPLDIR">templdir option. @@ -1503,10 +1504,8 @@ the BLOCKED page? available as compile-time options. You should configure the sources as follows: - ./configure --disable-toggle --disable-editor --disable-force - This will create an executable with hard-coded security features so that &my-app; does not allow easy bypassing of blocked sites, or changing the @@ -1807,11 +1806,9 @@ us help you. Your efforts are not wasted, and we do appreciate them. forwarding section and uncomment the line: - # forward-socks5t / 127.0.0.1:9050 . - - + 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). @@ -1824,13 +1821,11 @@ us help you. Your efforts are not wasted, and we do appreciate them. uncomment the following forward rules, to make sure your local network is still reachable through Privoxy: - # forward 192.168.*.*/ . # forward 10.*.*.*/ . # forward 127.*.*.*/ . - - + Unencrypted connections to systems in these address ranges will be as (un)secure as the local network is, but the alternative is @@ -1844,11 +1839,9 @@ us help you. Your efforts are not wasted, and we do appreciate them. network by using their names, you will need additional exceptions that look like this: - # forward localhost/ . - - + Save the modified configuration file and open http://config.privoxy.org/show-status @@ -1974,9 +1967,17 @@ ads used to be. Why? How can Privoxy filter Secure (HTTPS) URLs? - Since secure HTTP connections are encrypted SSL sessions between your browser - and the secure site, and are meant to be reliably secure, - there is little that Privoxy can do but hand the raw + If you enable + https-inspection + Privoxy will impersonate the destination + server and can thus filter encrypted requests and responses as well. + + + Without + https-inspection + secure HTTP connections are encrypted SSL sessions between your + browser and the secure site, and there is little + that Privoxy can do but hand the raw gibberish data though from one end to the other unprocessed. @@ -2003,6 +2004,21 @@ ads used to be. Why? + +Does Privoxy support HTTP/2? + + Privoxy currently doesn't parse HTTP/2 but applications + can tunnel HTTP/2 through Privoxy if Privoxy is configured + to allow CONNECT requests (default) which are also used + for HTTPS. + + + Adding HTTP/2 support is on the + TODO + list but currently nobody is known to work on it. + + + Privoxy runs as a <quote>server</quote>. How secure is it? Do I need to take any special precautions? @@ -2075,7 +2091,7 @@ out of the picture? My logs show Privoxy <quote>crunches</quote> ads, but also its own internal CGI pages. What is a <quote>crunch</quote>? - A crunch simply means Privoxy intercepted + A crunch means Privoxy intercepted something, nothing more. Often this is indeed ads or banners, but Privoxy uses the same mechanism for trapping requests for its own internal pages. For instance, a request for @@ -2179,14 +2195,12 @@ altered it! Yikes, what is wrong! your hosts list is neglected by Privoxy's configuration, consider adding your list to your user.action file: - { +block } www.ad.example1.com ad.example2.com ads.galore.example.com etc.example.com - @@ -2246,7 +2260,7 @@ and related issues? Lately there have been reports of problems with some kind of "parental control" software based on Privoxy that came preinstalled on - certain ASUS Netbooks. + certain ASUS Netbooks. The problems described are inconsistent with the behaviour of official Privoxy versions, which suggests that the preinstalled software may contain vendor modifications that we don't know about and thus can't debug. @@ -2282,7 +2296,6 @@ and related issues? There are several possibilities: - Privoxy is not running. Solution: verify @@ -2302,7 +2315,6 @@ and related issues? try disabling or removing the firewall as a simple test. - @@ -2355,7 +2367,6 @@ still getting through. How? our job a little easier. &my-app; has crunched (meaning caught and BLOCKED) quite a few items in this example, but perhaps missed a few as well. - - Despite 12 out of 32 requests being blocked, the page looked, and seemed to behave perfectly normal (minus some ads, of course). @@ -2618,37 +2628,6 @@ every time I start IE. What gives? - - - -I get a completely blank page at one site. <quote>View Source</quote> - shows only: <markup><![CDATA[<html><body></body></html>]]></markup>. Without - Privoxy the page loads fine. - - Chances are that the site suffers from a bug in - PHP, - which results in empty pages being sent if the client explicitly requests - an uncompressed page, like Privoxy does. - This bug has been fixed in PHP 4.2.3. - - - To find out if this is in fact the source of the problem, try adding - the site to a -prevent-compression section in - user.action: - - - # Make exceptions for ill-behaved sites: - # - {-prevent-compression} - .example.com - - If that works, you may also want to report the problem to the - site's webmasters, telling them to use zlib.output_compression - instead of ob_gzhandler in their PHP applications (workaround) - or upgrade to PHP 4.2.3 or later (fix). - - - My logs show many <quote>Unable to get my own hostname</quote> lines. Why? @@ -2714,7 +2693,7 @@ Why? Upgrading Privoxy, or going to the most recent default.action file available from SourceForge + url="https://www.privoxy.org/gitweb/?p=privoxy.git;a=blob_plain;f=default.action.master;hb=HEAD">git might be worth a try, too. @@ -2884,14 +2863,12 @@ browsing has slowed to a crawl. What gives? To do that, enable logging to figure out which requests get blocked by &my-app; and add the hosts (no path patterns) to a section like this: - - Additionally you have to configure your browser to contact 127.0.0.1:0 directly (instead of through &my-app;). @@ -2989,6 +2966,68 @@ browsing has slowed to a crawl. What gives? + +After adding my custom filters, &my-app; crashes when visitting certain websites + + This can happen if your custom filters require more memory than &my-app; + is allowed to use. + Usually the problem is that the operating system enforces a stack size limit + that isn't sufficient. + + + Unless the problem occurs with the filters available in the default configuration, + this is not considered a Privoxy bug. + + + To prevent the crashes you can rewrite your filter to use less resources, + increase the relevant memory limit or recompile pcre to use less stack space. + For details please see the + pcrestack man page + and the documentation of your operating system. + + + + +What to do if editing the config file of privoxy is access denied? + + Your userid probably isn't allowed to edit the file. + + On Windows you can use the windows equivalent of sudo: + + runas /user:administrator "notepad \privoxy\config.txt" + + + or fix the file permissions: + +C:\Privoxy>icacls config.txt +config.txt BUILTIN\Administrators:(I)(F) + NT AUTHORITY\SYSTEM:(I)(F) + BUILTIN\Users:(I)(RX) + NT AUTHORITY\Authenticated Users:(I)(M) + +Successfully processed 1 files; Failed processing 0 files + +C:\Privoxy>icacls config.txt /grant Lee:F +processed file: config.txt +Successfully processed 1 files; Failed processing 0 files + +C:\Privoxy>icacls config.txt +config.txt I3668\Lee:(F) + BUILTIN\Administrators:(I)(F) + NT AUTHORITY\SYSTEM:(I)(F) + BUILTIN\Users:(I)(RX) + NT AUTHORITY\Authenticated Users:(I)(M) + +Successfully processed 1 files; Failed processing 0 files + +C:\Privoxy> + + + or try to point-n-click your way through adjusting the file + permissions in windows explorer. + + + @@ -3013,7 +3052,7 @@ browsing has slowed to a crawl. What gives? - License + License &license; @@ -3021,7 +3060,7 @@ browsing has slowed to a crawl. What gives? - History + History &history;