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privoxy 3.0.12 clean checkin
2012-06-28 03:42:39 +00:00
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>The Main Configuration File</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="Privoxy 3.0.12 User Manual"
HREF="index.html"><LINK
REL="PREVIOUS"
TITLE="Privoxy Configuration"
HREF="configuration.html"><LINK
REL="NEXT"
TITLE="Actions Files"
HREF="actions-file.html"><LINK
REL="STYLESHEET"
TYPE="text/css"
HREF="../p_doc.css"><META
HTTP-EQUIV="Content-Type"
CONTENT="text/html;
charset=ISO-8859-1">
<LINK REL="STYLESHEET" TYPE="text/css" HREF="p_doc.css">
</head
><BODY
CLASS="SECT1"
BGCOLOR="#EEEEEE"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>Privoxy 3.0.12 User Manual</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="configuration.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="actions-file.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="CONFIG"
>7. The Main Configuration File</A
></H1
><P
> Again, the main configuration file is named <TT
CLASS="FILENAME"
>config</TT
> on
Linux/Unix/BSD and OS/2, and <TT
CLASS="FILENAME"
>config.txt</TT
> on Windows.
Configuration lines consist of an initial keyword followed by a list of
values, all separated by whitespace (any number of spaces or tabs). For
example:</P
><P
> <TT
CLASS="LITERAL"
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>confdir /etc/privoxy</I
></SPAN
></P
>
</TT
> </P
><P
> Assigns the value <TT
CLASS="LITERAL"
>/etc/privoxy</TT
> to the option
<TT
CLASS="LITERAL"
>confdir</TT
> and thus indicates that the configuration
directory is named <SPAN
CLASS="QUOTE"
>"/etc/privoxy/"</SPAN
>.</P
><P
> All options in the config file except for <TT
CLASS="LITERAL"
>confdir</TT
> and
<TT
CLASS="LITERAL"
>logdir</TT
> are optional. Watch out in the below description
for what happens if you leave them unset.</P
><P
> The main config file controls all aspects of <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>'s
operation that are not location dependent (i.e. they apply universally, no matter
where you may be surfing).</P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="LOCAL-SET-UP"
>7.1. Local Set-up Documentation</A
></H2
><P
> If you intend to operate <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> for more users
than just yourself, it might be a good idea to let them know how to reach
you, what you block and why you do that, your policies, etc.
</P
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="USER-MANUAL"
>7.1.1. user-manual</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Location of the <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> User Manual.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>A fully qualified URI</P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Unset</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> <A
HREF="http://www.privoxy.org/user-manual/"
TARGET="_top"
>http://www.privoxy.org/<TT
CLASS="REPLACEABLE"
><I
>version</I
></TT
>/user-manual/</A
>
will be used, where <TT
CLASS="REPLACEABLE"
><I
>version</I
></TT
> is the <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> version.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> The User Manual URI is the single best source of information on
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>, and is used for help links from some
of the internal CGI pages. The manual itself is normally packaged with the
binary distributions, so you probably want to set this to a locally
installed copy.
</P
><P
> Examples:
</P
><P
> The best all purpose solution is simply to put the full local
<TT
CLASS="LITERAL"
>PATH</TT
> to where the <I
CLASS="CITETITLE"
>User Manual</I
> is
located:
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
><3E><>user-manual<61><6C>/usr/share/doc/privoxy/user-manual</PRE
></TD
></TR
></TABLE
>
</P
><P
> The User Manual is then available to anyone with access to
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>, by following the built-in URL:
<TT
CLASS="LITERAL"
>http://config.privoxy.org/user-manual/</TT
>
(or the shortcut: <TT
CLASS="LITERAL"
>http://p.p/user-manual/</TT
>).
</P
><P
> If the documentation is not on the local system, it can be accessed
from a remote server, as:
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
><3E><>user-manual<61><6C>http://example.com/privoxy/user-manual/</PRE
></TD
></TR
></TABLE
>
</P
><DIV
CLASS="WARNING"
><P
></P
><TABLE
CLASS="WARNING"
BORDER="1"
WIDTH="90%"
><TR
><TD
ALIGN="CENTER"
><B
>Warning</B
></TD
></TR
><TR
><TD
ALIGN="LEFT"
><P
> If set, this option should be <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>the first option in the config
file</I
></SPAN
>, because it is used while the config file is being read
on start-up.
</P
></TD
></TR
></TABLE
></DIV
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="TRUST-INFO-URL"
>7.1.2. trust-info-url</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> A URL to be displayed in the error page that users will see if access to an untrusted page is denied.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>URL</P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Unset</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> No links are displayed on the "untrusted" error page.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> The value of this option only matters if the experimental trust mechanism has been
activated. (See <A
HREF="config.html#TRUSTFILE"
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>trustfile</I
></SPAN
></A
> below.)
</P
><P
> If you use the trust mechanism, it is a good idea to write up some on-line
documentation about your trust policy and to specify the URL(s) here.
Use multiple times for multiple URLs.
</P
><P
> The URL(s) should be added to the trustfile as well, so users don't end up
locked out from the information on why they were locked out in the first place!
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="ADMIN-ADDRESS"
>7.1.3. admin-address</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> An email address to reach the <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> administrator.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>Email address</P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Unset</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> No email address is displayed on error pages and the CGI user interface.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> If both <TT
CLASS="LITERAL"
>admin-address</TT
> and <TT
CLASS="LITERAL"
>proxy-info-url</TT
>
are unset, the whole "Local Privoxy Support" box on all generated pages will
not be shown.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="PROXY-INFO-URL"
>7.1.4. proxy-info-url</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> A URL to documentation about the local <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> setup,
configuration or policies.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>URL</P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Unset</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> No link to local documentation is displayed on error pages and the CGI user interface.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> If both <TT
CLASS="LITERAL"
>admin-address</TT
> and <TT
CLASS="LITERAL"
>proxy-info-url</TT
>
are unset, the whole "Local Privoxy Support" box on all generated pages will
not be shown.
</P
><P
> This URL shouldn't be blocked ;-)
</P
></DD
></DL
></DIV
></DIV
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="CONF-LOG-LOC"
>7.2. Configuration and Log File Locations</A
></H2
><P
> <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> can (and normally does) use a number of
other files for additional configuration, help and logging.
This section of the configuration file tells <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>
where to find those other files. </P
><P
> The user running <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>, must have read
permission for all configuration files, and write permission to any files
that would be modified, such as log files and actions files.</P
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="CONFDIR"
>7.2.1. confdir</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
>The directory where the other configuration files are located.</P
></DD
><DT
>Type of value:</DT
><DD
><P
>Path name</P
></DD
><DT
>Default value:</DT
><DD
><P
>/etc/privoxy (Unix) <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>or</I
></SPAN
> <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> installation dir (Windows) </P
></DD
><DT
>Effect if unset:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Mandatory</I
></SPAN
></P
></DD
><DT
>Notes:</DT
><DD
><P
> No trailing <SPAN
CLASS="QUOTE"
>"<TT
CLASS="LITERAL"
>/</TT
>"</SPAN
>, please.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="TEMPLDIR"
>7.2.2. templdir</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
>An alternative directory where the templates are loaded from.</P
></DD
><DT
>Type of value:</DT
><DD
><P
>Path name</P
></DD
><DT
>Default value:</DT
><DD
><P
>unset</P
></DD
><DT
>Effect if unset:</DT
><DD
><P
>The templates are assumed to be located in confdir/template.</P
></DD
><DT
>Notes:</DT
><DD
><P
> <SPAN
CLASS="APPLICATION"
>Privoxy's</SPAN
> original templates are usually
overwritten with each update. Use this option to relocate customized
templates that should be kept. As template variables might change
between updates, you shouldn't expect templates to work with
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> releases other than the one
they were part of, though.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="LOGDIR"
>7.2.3. logdir</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> The directory where all logging takes place
(i.e. where the <TT
CLASS="FILENAME"
>logfile</TT
> is located).
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>Path name</P
></DD
><DT
>Default value:</DT
><DD
><P
>/var/log/privoxy (Unix) <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>or</I
></SPAN
> <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> installation dir (Windows) </P
></DD
><DT
>Effect if unset:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Mandatory</I
></SPAN
></P
></DD
><DT
>Notes:</DT
><DD
><P
> No trailing <SPAN
CLASS="QUOTE"
>"<TT
CLASS="LITERAL"
>/</TT
>"</SPAN
>, please.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="ACTIONSFILE"
>7.2.4. actionsfile</A
></H4
><A
NAME="DEFAULT.ACTION"
></A
><A
NAME="STANDARD.ACTION"
></A
><A
NAME="USER.ACTION"
></A
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> The <A
HREF="actions-file.html"
>actions file(s)</A
> to use
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>Complete file name, relative to <TT
CLASS="LITERAL"
>confdir</TT
></P
></DD
><DT
>Default values:</DT
><DD
><P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;match-all.action&nbsp;#&nbsp;Actions&nbsp;that&nbsp;are&nbsp;applied&nbsp;to&nbsp;all&nbsp;sites&nbsp;and&nbsp;maybe&nbsp;overruled&nbsp;later&nbsp;on.</P
>
</TD
></TR
><TR
><TD
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;default.action&nbsp;&nbsp;&nbsp;#&nbsp;Main&nbsp;actions&nbsp;file</P
>
</TD
></TR
><TR
><TD
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;user.action&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;#&nbsp;User&nbsp;customizations</P
>
</TD
></TR
></TBODY
></TABLE
><P
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> No actions are taken at all. More or less neutral proxying.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> Multiple <TT
CLASS="LITERAL"
>actionsfile</TT
> lines are permitted, and are in fact recommended!
</P
><P
>
The default values are <TT
CLASS="FILENAME"
>default.action</TT
>, which is the
<SPAN
CLASS="QUOTE"
>"main"</SPAN
> actions file maintained by the developers, and
<TT
CLASS="FILENAME"
>user.action</TT
>, where you can make your personal additions.
</P
><P
>
Actions files contain all the per site and per URL configuration for
ad blocking, cookie management, privacy considerations, etc.
There is no point in using <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> without at
least one actions file.
</P
><P
> Note that since Privoxy 3.0.7, the complete filename, including the <SPAN
CLASS="QUOTE"
>".action"</SPAN
>
extension has to be specified. The syntax change was necessary to be consistent
with the other file options and to allow previously forbidden characters.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="FILTERFILE"
>7.2.5. filterfile</A
></H4
><A
NAME="DEFAULT.FILTER"
></A
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> The <A
HREF="filter-file.html"
>filter file(s)</A
> to use
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>File name, relative to <TT
CLASS="LITERAL"
>confdir</TT
></P
></DD
><DT
>Default value:</DT
><DD
><P
>default.filter (Unix) <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>or</I
></SPAN
> default.filter.txt (Windows)</P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> No textual content filtering takes place, i.e. all
<TT
CLASS="LITERAL"
>+<A
HREF="actions-file.html#FILTER"
>filter</A
>{<TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
>}</TT
>
actions in the actions files are turned neutral.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> Multiple <TT
CLASS="LITERAL"
>filterfile</TT
> lines are permitted.
</P
><P
> The <A
HREF="filter-file.html"
>filter files</A
> contain content modification
rules that use <A
HREF="appendix.html#REGEX"
>regular expressions</A
>. These rules permit
powerful changes on the content of Web pages, and optionally the headers
as well, e.g., you could try to disable your favorite JavaScript annoyances,
re-write the actual displayed text, or just have some fun
playing buzzword bingo with web pages.
</P
><P
> The
<TT
CLASS="LITERAL"
>+<A
HREF="actions-file.html#FILTER"
>filter</A
>{<TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
>}</TT
>
actions rely on the relevant filter (<TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
>)
to be defined in a filter file!
</P
><P
> A pre-defined filter file called <TT
CLASS="FILENAME"
>default.filter</TT
> that contains
a number of useful filters for common problems is included in the distribution.
See the section on the <TT
CLASS="LITERAL"
><A
HREF="actions-file.html#FILTER"
>filter</A
></TT
>
action for a list.
</P
><P
> It is recommended to place any locally adapted filters into a separate
file, such as <TT
CLASS="FILENAME"
>user.filter</TT
>.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="LOGFILE"
>7.2.6. logfile</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> The log file to use
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>File name, relative to <TT
CLASS="LITERAL"
>logdir</TT
></P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Unset (commented out)</I
></SPAN
>. When activated: logfile (Unix) <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>or</I
></SPAN
> privoxy.log (Windows).</P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> No logfile is written.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> The logfile is where all logging and error messages are written. The level
of detail and number of messages are set with the <TT
CLASS="LITERAL"
>debug</TT
>
option (see below). The logfile can be useful for tracking down a problem with
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> (e.g., it's not blocking an ad you
think it should block) and it can help you to monitor what your browser
is doing.
</P
><P
> Depending on the debug options below, the logfile may be a privacy risk
if third parties can get access to it. As most users will never look
at it, <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> 3.0.7 and later only log fatal
errors by default.
</P
><P
> For most troubleshooting purposes, you will have to change that,
please refer to the debugging section for details.
</P
><P
> Your logfile will grow indefinitely, and you will probably want to
periodically remove it. On Unix systems, you can do this with a cron job
(see <SPAN
CLASS="QUOTE"
>"man cron"</SPAN
>). For Red Hat based Linux distributions, a
<B
CLASS="COMMAND"
>logrotate</B
> script has been included.
</P
><P
> Any log files must be writable by whatever user <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>
is being run as (on Unix, default user id is <SPAN
CLASS="QUOTE"
>"privoxy"</SPAN
>).
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="TRUSTFILE"
>7.2.7. trustfile</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> The name of the trust file to use
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>File name, relative to <TT
CLASS="LITERAL"
>confdir</TT
></P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Unset (commented out)</I
></SPAN
>. When activated: trust (Unix) <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>or</I
></SPAN
> trust.txt (Windows)</P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> The entire trust mechanism is disabled.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> The trust mechanism is an experimental feature for building white-lists and should
be used with care. It is <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>NOT</I
></SPAN
> recommended for the casual user.
</P
><P
> If you specify a trust file, <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> will only allow
access to sites that are specified in the trustfile. Sites can be listed
in one of two ways:
</P
><P
> Prepending a <TT
CLASS="LITERAL"
>~</TT
> character limits access to this site
only (and any sub-paths within this site), e.g.
<TT
CLASS="LITERAL"
>~www.example.com</TT
> allows access to
<TT
CLASS="LITERAL"
>~www.example.com/features/news.html</TT
>, etc.
</P
><P
> Or, you can designate sites as <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>trusted referrers</I
></SPAN
>, by
prepending the name with a <TT
CLASS="LITERAL"
>+</TT
> character. The effect is that
access to untrusted sites will be granted -- but only if a link from this
trusted referrer was used to get there. The link target will then be added
to the <SPAN
CLASS="QUOTE"
>"trustfile"</SPAN
> so that future, direct accesses will be
granted. Sites added via this mechanism do not become trusted referrers
themselves (i.e. they are added with a <TT
CLASS="LITERAL"
>~</TT
> designation).
There is a limit of 512 such entries, after which new entries will not be
made.
</P
><P
> If you use the <TT
CLASS="LITERAL"
>+</TT
> operator in the trust file, it may grow
considerably over time.
</P
><P
> It is recommended that <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> be compiled with
the <TT
CLASS="LITERAL"
>--disable-force</TT
>, <TT
CLASS="LITERAL"
>--disable-toggle</TT
> and
<TT
CLASS="LITERAL"
> --disable-editor</TT
> options, if this feature is to be
used.
</P
><P
> Possible applications include limiting Internet access for children.
</P
></DD
></DL
></DIV
></DIV
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="DEBUGGING"
>7.3. Debugging</A
></H2
><P
> These options are mainly useful when tracing a problem.
Note that you might also want to invoke
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> with the <TT
CLASS="LITERAL"
>--no-daemon</TT
>
command line option when debugging.
</P
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="DEBUG"
>7.3.1. debug</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Key values that determine what information gets logged.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>Integer values</P
></DD
><DT
>Default value:</DT
><DD
><P
>0 (i.e.: only fatal errors (that cause Privoxy to exit) are logged)</P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> Default value is used (see above).
</P
></DD
><DT
>Notes:</DT
><DD
><P
> The available debug levels are:
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
> debug 1 # Log the destination for each request <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> let through. See also debug 1024.
adding in privoxy directly to Orbot repo
2012-05-03 18:32:18 +00:00
debug 2 # show each connection status
debug 4 # show I/O status
debug 8 # show header parsing
privoxy 3.0.12 clean checkin
2012-06-28 03:42:39 +00:00
debug 16 # log all data written to the network into the logfile
adding in privoxy directly to Orbot repo
2012-05-03 18:32:18 +00:00
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
privoxy 3.0.12 clean checkin
2012-06-28 03:42:39 +00:00
debug 1024 # Log the destination for requests <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> didn't let through, and the reason why.
adding in privoxy directly to Orbot repo
2012-05-03 18:32:18 +00:00
debug 2048 # CGI user interface
debug 4096 # Startup banner and warnings.
privoxy 3.0.12 clean checkin
2012-06-28 03:42:39 +00:00
debug 8192 # Non-fatal errors</PRE
></TD
></TR
></TABLE
>
</P
><P
> To select multiple debug levels, you can either add them or use
multiple <TT
CLASS="LITERAL"
>debug</TT
> lines.
</P
><P
> A debug level of 1 is informative because it will show you each request
as it happens. <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>1, 4096 and 8192 are recommended</I
></SPAN
>
so that you will notice when things go wrong. The other levels are
probably only of interest if you are hunting down a specific problem.
They can produce a hell of an output (especially 16).
</P
><P
> <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> used to ship with the debug levels recommended above enabled by
default, but due to privacy concerns 3.0.7 and later are configured to
only log fatal errors.
</P
><P
> If you are used to the more verbose settings, simply enable the debug lines
below again.
</P
><P
> If you want to use pure CLF (Common Log Format), you should set <SPAN
CLASS="QUOTE"
>"debug
512"</SPAN
> <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>ONLY</I
></SPAN
> and not enable anything else.
</P
><P
> <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> has a hard-coded limit for the
length of log messages. If it's reached, messages are logged truncated
and marked with <SPAN
CLASS="QUOTE"
>"... [too long, truncated]"</SPAN
>.
</P
><P
> Please don't file any support requests without trying to reproduce
the problem with increased debug level first. Once you read the log
messages, you may even be able to solve the problem on your own.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="SINGLE-THREADED"
>7.3.2. single-threaded</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Whether to run only one server thread.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>None</I
></SPAN
></P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Unset</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> Multi-threaded (or, where unavailable: forked) operation, i.e. the ability to
serve multiple requests simultaneously.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> This option is only there for debugging purposes.
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>It will drastically reduce performance.</I
></SPAN
>
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="HOSTNAME"
>7.3.3. hostname</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> The hostname shown on the CGI pages.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>Text</P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Unset</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> The hostname provided by the operating system is used.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> On some misconfigured systems resolving the hostname fails or
takes too much time and slows Privoxy down. Setting a fixed hostname
works around the problem.
</P
><P
> In other circumstances it might be desirable to show a hostname
other than the one returned by the operating system. For example
if the system has several different hostnames and you don't want
to use the first one.
</P
><P
> Note that Privoxy does not validate the specified hostname value.
</P
></DD
></DL
></DIV
></DIV
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="ACCESS-CONTROL"
>7.4. Access Control and Security</A
></H2
><P
> This section of the config file controls the security-relevant aspects
of <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>'s configuration.
</P
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="LISTEN-ADDRESS"
>7.4.1. listen-address</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> The IP address and TCP port on which <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> will
listen for client requests.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>[<TT
CLASS="REPLACEABLE"
><I
>IP-Address</I
></TT
>]:<TT
CLASS="REPLACEABLE"
><I
>Port</I
></TT
></P
></DD
><DT
>Default value:</DT
><DD
><P
>127.0.0.1:8118</P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> Bind to 127.0.0.1 (localhost), port 8118. This is suitable and recommended for
home users who run <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> on the same machine as
their browser.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> You will need to configure your browser(s) to this proxy address and port.
</P
><P
> If you already have another service running on port 8118, or if you want to
serve requests from other machines (e.g. on your local network) as well, you
will need to override the default.
</P
><P
> If you leave out the IP address, <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> will
bind to all interfaces (addresses) on your machine and may become reachable
from the Internet. In that case, consider using <A
HREF="config.html#ACLS"
>access control lists</A
> (ACL's, see below), and/or
a firewall.
</P
><P
> If you open <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> to untrusted users, you will
also want to make sure that the following actions are disabled: <TT
CLASS="LITERAL"
><A
HREF="config.html#ENABLE-EDIT-ACTIONS"
>enable-edit-actions</A
></TT
> and
<TT
CLASS="LITERAL"
><A
HREF="config.html#ENABLE-REMOTE-TOGGLE"
>enable-remote-toggle</A
></TT
>
</P
></DD
><DT
>Example:</DT
><DD
><P
> Suppose you are running <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> on
a machine which has the address 192.168.0.1 on your local private network
(192.168.0.0) and has another outside connection with a different address.
You want it to serve requests from inside only:
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
> listen-address 192.168.0.1:8118</PRE
></TD
></TR
></TABLE
>
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="TOGGLE"
>7.4.2. toggle</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Initial state of "toggle" status
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>1 or 0</P
></DD
><DT
>Default value:</DT
><DD
><P
>1</P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> Act as if toggled on
</P
></DD
><DT
>Notes:</DT
><DD
><P
> If set to 0, <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> will start in
<SPAN
CLASS="QUOTE"
>"toggled off"</SPAN
> mode, i.e. mostly behave like a normal,
content-neutral proxy with both ad blocking and content filtering
disabled. See <TT
CLASS="LITERAL"
>enable-remote-toggle</TT
> below.
</P
><P
> The windows version will only display the toggle icon in the system tray
if this option is present.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="ENABLE-REMOTE-TOGGLE"
>7.4.3. enable-remote-toggle</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Whether or not the <A
HREF="http://config.privoxy.org/toggle"
TARGET="_top"
>web-based toggle
feature</A
> may be used
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>0 or 1</P
></DD
><DT
>Default value:</DT
><DD
><P
>0</P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> The web-based toggle feature is disabled.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> When toggled off, <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> mostly acts like a normal,
content-neutral proxy, i.e. doesn't block ads or filter content.
</P
><P
> Access to the toggle feature can <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>not</I
></SPAN
> be
controlled separately by <SPAN
CLASS="QUOTE"
>"ACLs"</SPAN
> or HTTP authentication,
so that everybody who can access <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> (see
<SPAN
CLASS="QUOTE"
>"ACLs"</SPAN
> and <TT
CLASS="LITERAL"
>listen-address</TT
> above) can
toggle it for all users. So this option is <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>not recommended</I
></SPAN
>
for multi-user environments with untrusted users.
</P
><P
> Note that malicious client side code (e.g Java) is also
capable of using this option.
</P
><P
> As a lot of <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> users don't read
documentation, this feature is disabled by default.
</P
><P
> Note that you must have compiled <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> with
support for this feature, otherwise this option has no effect.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="ENABLE-REMOTE-HTTP-TOGGLE"
>7.4.4. enable-remote-http-toggle</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Whether or not Privoxy recognizes special HTTP headers to change its behaviour.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>0 or 1</P
></DD
><DT
>Default value:</DT
><DD
><P
>0</P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> Privoxy ignores special HTTP headers.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> When toggled on, the client can change <SPAN
CLASS="APPLICATION"
>Privoxy's</SPAN
>
behaviour by setting special HTTP headers. Currently the only supported
special header is <SPAN
CLASS="QUOTE"
>"X-Filter: No"</SPAN
>, to disable filtering for
the ongoing request, even if it is enabled in one of the action files.
</P
><P
> This feature is disabled by default. If you are using
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> in a environment with trusted clients,
you may enable this feature at your discretion. Note that malicious client
side code (e.g Java) is also capable of using this feature.
</P
><P
> This option will be removed in future releases as it has been obsoleted
by the more general header taggers.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="ENABLE-EDIT-ACTIONS"
>7.4.5. enable-edit-actions</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Whether or not the <A
HREF="http://config.privoxy.org/show-status"
TARGET="_top"
>web-based actions
file editor</A
> may be used
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>0 or 1</P
></DD
><DT
>Default value:</DT
><DD
><P
>0</P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> The web-based actions file editor is disabled.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> Access to the editor can <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>not</I
></SPAN
> be
controlled separately by <SPAN
CLASS="QUOTE"
>"ACLs"</SPAN
> or HTTP authentication,
so that everybody who can access <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> (see
<SPAN
CLASS="QUOTE"
>"ACLs"</SPAN
> and <TT
CLASS="LITERAL"
>listen-address</TT
> above) can
modify its configuration for all users.
</P
><P
> This option is <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>not recommended</I
></SPAN
> for environments
with untrusted users and as a lot of <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>
users don't read documentation, this feature is disabled by default.
</P
><P
> Note that malicious client side code (e.g Java) is also
capable of using the actions editor and you shouldn't enable
this options unless you understand the consequences and are
sure your browser is configured correctly.
</P
><P
> Note that you must have compiled <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> with
support for this feature, otherwise this option has no effect.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="ENFORCE-BLOCKS"
>7.4.6. enforce-blocks</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Whether the user is allowed to ignore blocks and can <SPAN
CLASS="QUOTE"
>"go there anyway"</SPAN
>.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
> <TT
CLASS="REPLACEABLE"
><I
>0 or 1</I
></TT
>
</P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>0</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> Blocks are not enforced.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> is mainly used to block and filter
requests as a service to the user, for example to block ads and other
junk that clogs the pipes. <SPAN
CLASS="APPLICATION"
>Privoxy's</SPAN
> configuration
isn't perfect and sometimes innocent pages are blocked. In this situation it
makes sense to allow the user to enforce the request and have
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> ignore the block.
</P
><P
> In the default configuration <SPAN
CLASS="APPLICATION"
>Privoxy's</SPAN
>
<SPAN
CLASS="QUOTE"
>"Blocked"</SPAN
> page contains a <SPAN
CLASS="QUOTE"
>"go there anyway"</SPAN
>
link to adds a special string (the force prefix) to the request URL.
If that link is used, <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> will
detect the force prefix, remove it again and let the request pass.
</P
><P
> Of course <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> can also be used to enforce
a network policy. In that case the user obviously should not be able to
bypass any blocks, and that's what the <SPAN
CLASS="QUOTE"
>"enforce-blocks"</SPAN
>
option is for. If it's enabled, <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> hides
the <SPAN
CLASS="QUOTE"
>"go there anyway"</SPAN
> link. If the user adds the force
prefix by hand, it will not be accepted and the circumvention attempt
is logged.
</P
></DD
><DT
>Examples:</DT
><DD
><P
> enforce-blocks 1
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="ACLS"
>7.4.7. ACLs: permit-access and deny-access</A
></H4
><A
NAME="PERMIT-ACCESS"
></A
><A
NAME="DENY-ACCESS"
></A
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Who can access what.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
> <TT
CLASS="REPLACEABLE"
><I
>src_addr</I
></TT
>[/<TT
CLASS="REPLACEABLE"
><I
>src_masklen</I
></TT
>]
[<TT
CLASS="REPLACEABLE"
><I
>dst_addr</I
></TT
>[/<TT
CLASS="REPLACEABLE"
><I
>dst_masklen</I
></TT
>]]
</P
><P
> Where <TT
CLASS="REPLACEABLE"
><I
>src_addr</I
></TT
> and
<TT
CLASS="REPLACEABLE"
><I
>dst_addr</I
></TT
> are IP addresses in dotted decimal notation or valid
DNS names, and <TT
CLASS="REPLACEABLE"
><I
>src_masklen</I
></TT
> and
<TT
CLASS="REPLACEABLE"
><I
>dst_masklen</I
></TT
> are subnet masks in CIDR notation, i.e. integer
values from 2 to 30 representing the length (in bits) of the network address. The masks and the whole
destination part are optional.
</P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Unset</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> Don't restrict access further than implied by <TT
CLASS="LITERAL"
>listen-address</TT
>
</P
></DD
><DT
>Notes:</DT
><DD
><P
> Access controls are included at the request of ISPs and systems
administrators, and <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>are not usually needed by individual users</I
></SPAN
>.
For a typical home user, it will normally suffice to ensure that
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> only listens on the localhost
(127.0.0.1) or internal (home) network address by means of the
<A
HREF="config.html#LISTEN-ADDRESS"
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>listen-address</I
></SPAN
></A
>
option.
</P
><P
> Please see the warnings in the FAQ that <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>
is not intended to be a substitute for a firewall or to encourage anyone
to defer addressing basic security weaknesses.
</P
><P
> Multiple ACL lines are OK.
If any ACLs are specified, <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> only talks
to IP addresses that match at least one <TT
CLASS="LITERAL"
>permit-access</TT
> line
and don't match any subsequent <TT
CLASS="LITERAL"
>deny-access</TT
> line. In other words, the
last match wins, with the default being <TT
CLASS="LITERAL"
>deny-access</TT
>.
</P
><P
> If <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> is using a forwarder (see <TT
CLASS="LITERAL"
>forward</TT
> below)
for a particular destination URL, the <TT
CLASS="REPLACEABLE"
><I
>dst_addr</I
></TT
>
that is examined is the address of the forwarder and <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>NOT</I
></SPAN
> the address
of the ultimate target. This is necessary because it may be impossible for the local
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> to determine the IP address of the
ultimate target (that's often what gateways are used for).
</P
><P
> You should prefer using IP addresses over DNS names, because the address lookups take
time. All DNS names must resolve! You can <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>not</I
></SPAN
> use domain patterns
like <SPAN
CLASS="QUOTE"
>"*.org"</SPAN
> or partial domain names. If a DNS name resolves to multiple
IP addresses, only the first one is used.
</P
><P
> Denying access to particular sites by ACL may have undesired side effects
if the site in question is hosted on a machine which also hosts other sites
(most sites are).
</P
></DD
><DT
>Examples:</DT
><DD
><P
> Explicitly define the default behavior if no ACL and
<TT
CLASS="LITERAL"
>listen-address</TT
> are set: <SPAN
CLASS="QUOTE"
>"localhost"</SPAN
>
is OK. The absence of a <TT
CLASS="REPLACEABLE"
><I
>dst_addr</I
></TT
> implies that
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>all</I
></SPAN
> destination addresses are OK:
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
> permit-access localhost</PRE
></TD
></TR
></TABLE
>
</P
><P
> Allow any host on the same class C subnet as www.privoxy.org access to
nothing but www.example.com (or other domains hosted on the same system):
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
> permit-access www.privoxy.org/24 www.example.com/32</PRE
></TD
></TR
></TABLE
>
</P
><P
> Allow access from any host on the 26-bit subnet 192.168.45.64 to anywhere,
with the exception that 192.168.45.73 may not access the IP address behind
www.dirty-stuff.example.com:
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
> permit-access 192.168.45.64/26
deny-access 192.168.45.73 www.dirty-stuff.example.com</PRE
></TD
></TR
></TABLE
>
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="BUFFER-LIMIT"
>7.4.8. buffer-limit</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Maximum size of the buffer for content filtering.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
>Size in Kbytes</P
></DD
><DT
>Default value:</DT
><DD
><P
>4096</P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> Use a 4MB (4096 KB) limit.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> For content filtering, i.e. the <TT
CLASS="LITERAL"
>+filter</TT
> and
<TT
CLASS="LITERAL"
>+deanimate-gif</TT
> actions, it is necessary that
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> buffers the entire document body.
This can be potentially dangerous, since a server could just keep sending
data indefinitely and wait for your RAM to exhaust -- with nasty consequences.
Hence this option.
</P
><P
> When a document buffer size reaches the <TT
CLASS="LITERAL"
>buffer-limit</TT
>, it is
flushed to the client unfiltered and no further attempt to
filter the rest of the document is made. Remember that there may be multiple threads
running, which might require up to <TT
CLASS="LITERAL"
>buffer-limit</TT
> Kbytes
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>each</I
></SPAN
>, unless you have enabled <SPAN
CLASS="QUOTE"
>"single-threaded"</SPAN
>
above.
</P
></DD
></DL
></DIV
></DIV
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="FORWARDING"
>7.5. Forwarding</A
></H2
><P
> This feature allows routing of HTTP requests through a chain of
multiple proxies.</P
><P
> Forwarding can be used to chain Privoxy with a caching proxy to speed
up browsing. Using a parent proxy may also be necessary if the machine
that <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> runs on has no direct Internet access.</P
><P
> Note that parent proxies can severely decrease your privacy level.
For example a parent proxy could add your IP address to the request
headers and if it's a caching proxy it may add the <SPAN
CLASS="QUOTE"
>"Etag"</SPAN
>
header to revalidation requests again, even though you configured Privoxy
to remove it. It may also ignore Privoxy's header time randomization and use the
original values which could be used by the server as cookie replacement
to track your steps between visits.</P
><P
> Also specified here are SOCKS proxies. <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>
supports the SOCKS 4 and SOCKS 4A protocols.</P
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="FORWARD"
>7.5.1. forward</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> To which parent HTTP proxy specific requests should be routed.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
> <TT
CLASS="REPLACEABLE"
><I
>target_pattern</I
></TT
>
<TT
CLASS="REPLACEABLE"
><I
>http_parent</I
></TT
>[:<TT
CLASS="REPLACEABLE"
><I
>port</I
></TT
>]
</P
><P
> where <TT
CLASS="REPLACEABLE"
><I
>target_pattern</I
></TT
> is a <A
HREF="actions-file.html#AF-PATTERNS"
>URL pattern</A
>
that specifies to which requests (i.e. URLs) this forward rule shall apply. Use <TT
CLASS="LITERAL"
>/</TT
> to
denote <SPAN
CLASS="QUOTE"
>"all URLs"</SPAN
>.
<TT
CLASS="REPLACEABLE"
><I
>http_parent</I
></TT
>[:<TT
CLASS="REPLACEABLE"
><I
>port</I
></TT
>]
is the DNS name or IP address of the parent HTTP proxy through which the requests should be forwarded,
optionally followed by its listening port (default: 8080).
Use a single dot (<TT
CLASS="LITERAL"
>.</TT
>) to denote <SPAN
CLASS="QUOTE"
>"no forwarding"</SPAN
>.
</P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Unset</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> Don't use parent HTTP proxies.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> If <TT
CLASS="REPLACEABLE"
><I
>http_parent</I
></TT
> is <SPAN
CLASS="QUOTE"
>"."</SPAN
>, then requests are not
forwarded to another HTTP proxy but are made directly to the web servers.
</P
><P
> Multiple lines are OK, they are checked in sequence, and the last match wins.
</P
></DD
><DT
>Examples:</DT
><DD
><P
> Everything goes to an example parent proxy, except SSL on port 443 (which it doesn't handle):
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
> forward / parent-proxy.example.org:8080
forward :443 .</PRE
></TD
></TR
></TABLE
>
</P
><P
> Everything goes to our example ISP's caching proxy, except for requests
to that ISP's sites:
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
> forward / caching-proxy.isp.example.net:8000
forward .isp.example.net .</PRE
></TD
></TR
></TABLE
>
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="SOCKS"
>7.5.2. forward-socks4, forward-socks4a and forward-socks5</A
></H4
><A
NAME="FORWARD-SOCKS4"
></A
><A
NAME="FORWARD-SOCKS4A"
></A
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Through which SOCKS proxy (and optionally to which parent HTTP proxy) specific requests should be routed.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
> <TT
CLASS="REPLACEABLE"
><I
>target_pattern</I
></TT
>
<TT
CLASS="REPLACEABLE"
><I
>socks_proxy</I
></TT
>[:<TT
CLASS="REPLACEABLE"
><I
>port</I
></TT
>]
<TT
CLASS="REPLACEABLE"
><I
>http_parent</I
></TT
>[:<TT
CLASS="REPLACEABLE"
><I
>port</I
></TT
>]
</P
><P
> where <TT
CLASS="REPLACEABLE"
><I
>target_pattern</I
></TT
> is a
<A
HREF="actions-file.html#AF-PATTERNS"
>URL pattern</A
> that specifies to which
requests (i.e. URLs) this forward rule shall apply. Use <TT
CLASS="LITERAL"
>/</TT
> to
denote <SPAN
CLASS="QUOTE"
>"all URLs"</SPAN
>. <TT
CLASS="REPLACEABLE"
><I
>http_parent</I
></TT
>
and <TT
CLASS="REPLACEABLE"
><I
>socks_proxy</I
></TT
>
are IP addresses in dotted decimal notation or valid DNS names
(<TT
CLASS="REPLACEABLE"
><I
>http_parent</I
></TT
>
may be <SPAN
CLASS="QUOTE"
>"."</SPAN
> to denote <SPAN
CLASS="QUOTE"
>"no HTTP forwarding"</SPAN
>), and the optional
<TT
CLASS="REPLACEABLE"
><I
>port</I
></TT
> parameters are TCP ports,
i.e. integer values from 1 to 65535
</P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Unset</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> Don't use SOCKS proxies.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> Multiple lines are OK, they are checked in sequence, and the last match wins.
</P
><P
> The difference between <TT
CLASS="LITERAL"
>forward-socks4</TT
> and <TT
CLASS="LITERAL"
>forward-socks4a</TT
>
is that in the SOCKS 4A protocol, the DNS resolution of the target hostname happens on the SOCKS
server, while in SOCKS 4 it happens locally.
</P
><P
> With <TT
CLASS="LITERAL"
>forward-socks5</TT
> the DNS resolution will happen on the remote server as well.
</P
><P
> If <TT
CLASS="REPLACEABLE"
><I
>http_parent</I
></TT
> is <SPAN
CLASS="QUOTE"
>"."</SPAN
>, then requests are not
forwarded to another HTTP proxy but are made (HTTP-wise) directly to the web servers, albeit through
a SOCKS proxy.
</P
></DD
><DT
>Examples:</DT
><DD
><P
> From the company example.com, direct connections are made to all
<SPAN
CLASS="QUOTE"
>"internal"</SPAN
> domains, but everything outbound goes through
their ISP's proxy by way of example.com's corporate SOCKS 4A gateway to
the Internet.
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
> forward-socks4a / socks-gw.example.com:1080 www-cache.isp.example.net:8080
forward .example.com .</PRE
></TD
></TR
></TABLE
>
</P
><P
> A rule that uses a SOCKS 4 gateway for all destinations but no HTTP parent looks like this:
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
> forward-socks4 / socks-gw.example.com:1080 .</PRE
></TD
></TR
></TABLE
>
</P
><P
> To chain Privoxy and Tor, both running on the same system, you would use
something like:
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
> forward-socks4a / 127.0.0.1:9050 .</PRE
></TD
></TR
></TABLE
>
</P
><P
> The public <SPAN
CLASS="APPLICATION"
>Tor</SPAN
> network can't be used to
reach your local network, if you need to access local servers you
therefore might want to make some exceptions:
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
> forward 192.168.*.*/ .
forward 10.*.*.*/ .
forward 127.*.*.*/ .</PRE
></TD
></TR
></TABLE
>
</P
><P
> Unencrypted connections to systems in these address ranges will
be as (un)secure as the local network is, but the alternative is that you
can't reach the local network through <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>
at all. Of course this may actually be desired and there is no reason
to make these exceptions if you aren't sure you need them.
</P
><P
> If you also want to be able to reach servers in your local network by
using their names, you will need additional exceptions that look like
this:
</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TR
><TD
><PRE
CLASS="SCREEN"
> forward localhost/ .</PRE
></TD
></TR
></TABLE
>
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="ADVANCED-FORWARDING-EXAMPLES"
>7.5.3. Advanced Forwarding Examples</A
></H4
><P
> If you have links to multiple ISPs that provide various special content
only to their subscribers, you can configure multiple <SPAN
CLASS="APPLICATION"
>Privoxies</SPAN
>
which have connections to the respective ISPs to act as forwarders to each other, so that
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>your</I
></SPAN
> users can see the internal content of all ISPs.</P
><P
> Assume that host-a has a PPP connection to isp-a.example.net. And host-b has a PPP connection to
isp-b.example.org. Both run <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>. Their forwarding
configuration can look like this:</P
><P
> host-a:</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
> forward / .
forward .isp-b.example.net host-b:8118</PRE
></TD
></TR
></TABLE
></P
><P
> host-b:</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
> forward / .
forward .isp-a.example.org host-a:8118</PRE
></TD
></TR
></TABLE
></P
><P
> Now, your users can set their browser's proxy to use either
host-a or host-b and be able to browse the internal content
of both isp-a and isp-b.</P
><P
> If you intend to chain <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> and
<SPAN
CLASS="APPLICATION"
>squid</SPAN
> locally, then chaining as
<TT
CLASS="LITERAL"
>browser -&#62; squid -&#62; privoxy</TT
> is the recommended way. </P
><P
> Assuming that <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> and <SPAN
CLASS="APPLICATION"
>squid</SPAN
>
run on the same box, your <SPAN
CLASS="APPLICATION"
>squid</SPAN
> configuration could then look like this:</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
> # Define Privoxy as parent proxy (without ICP)
cache_peer 127.0.0.1 parent 8118 7 no-query
# Define ACL for protocol FTP
acl ftp proto FTP
updated privoxy to 3.0.19-stable
2012-06-28 03:17:49 +00:00
privoxy 3.0.12 clean checkin
2012-06-28 03:42:39 +00:00
# Do not forward FTP requests to Privoxy
always_direct allow ftp
updated privoxy to 3.0.19-stable
2012-06-28 03:17:49 +00:00
# Forward all the rest to Privoxy
privoxy 3.0.12 clean checkin
2012-06-28 03:42:39 +00:00
never_direct allow all</PRE
></TD
></TR
></TABLE
></P
><P
> You would then need to change your browser's proxy settings to <SPAN
CLASS="APPLICATION"
>squid</SPAN
>'s address and port.
Squid normally uses port 3128. If unsure consult <TT
CLASS="LITERAL"
>http_port</TT
> in <TT
CLASS="FILENAME"
>squid.conf</TT
>.</P
><P
> You could just as well decide to only forward requests you suspect
of leading to Windows executables through a virus-scanning parent proxy,
say, on <TT
CLASS="LITERAL"
>antivir.example.com</TT
>, port 8010:</P
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SCREEN"
> forward / .
forward /.*\.(exe|com|dll|zip)$ antivir.example.com:8010</PRE
></TD
></TR
></TABLE
> </P
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="FORWARDED-CONNECT-RETRIES"
>7.5.4. forwarded-connect-retries</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> How often Privoxy retries if a forwarded connection request fails.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
> <TT
CLASS="REPLACEABLE"
><I
>Number of retries.</I
></TT
>
</P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>0</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> Connections forwarded through other proxies are treated like direct connections and no retry attempts are made.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> <TT
CLASS="REPLACEABLE"
><I
>forwarded-connect-retries</I
></TT
> is mainly interesting
for socks4a connections, where <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> can't detect why the connections failed.
The connection might have failed because of a DNS timeout in which case a retry makes sense,
but it might also have failed because the server doesn't exist or isn't reachable. In this
case the retry will just delay the appearance of Privoxy's error message.
</P
><P
> Note that in the context of this option, <SPAN
CLASS="QUOTE"
>"forwarded connections"</SPAN
> includes all connections
that Privoxy forwards through other proxies. This option is not limited to the HTTP CONNECT method.
</P
><P
> Only use this option, if you are getting lots of forwarding-related error messages
that go away when you try again manually. Start with a small value and check Privoxy's
logfile from time to time, to see how many retries are usually needed.
</P
></DD
><DT
>Examples:</DT
><DD
><P
> forwarded-connect-retries 1
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="ACCEPT-INTERCEPTED-REQUESTS"
>7.5.5. accept-intercepted-requests</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Whether intercepted requests should be treated as valid.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
> <TT
CLASS="REPLACEABLE"
><I
>0 or 1</I
></TT
>
</P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>0</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> Only proxy requests are accepted, intercepted requests are treated as invalid.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> If you don't trust your clients and want to force them
to use <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>, enable this
option and configure your packet filter to redirect outgoing
HTTP connections into <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>.
</P
><P
> Make sure that <SPAN
CLASS="APPLICATION"
>Privoxy's</SPAN
> own requests
aren't redirected as well. Additionally take care that
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> can't intentionally connect
to itself, otherwise you could run into redirection loops if
<SPAN
CLASS="APPLICATION"
>Privoxy's</SPAN
> listening port is reachable
by the outside or an attacker has access to the pages you visit.
</P
></DD
><DT
>Examples:</DT
><DD
><P
> accept-intercepted-requests 1
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="ALLOW-CGI-REQUEST-CRUNCHING"
>7.5.6. allow-cgi-request-crunching</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Whether requests to <SPAN
CLASS="APPLICATION"
>Privoxy's</SPAN
> CGI pages can be blocked or redirected.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
> <TT
CLASS="REPLACEABLE"
><I
>0 or 1</I
></TT
>
</P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>0</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> ignores block and redirect actions for its CGI pages.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> By default <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> ignores block or redirect actions
for its CGI pages. Intercepting these requests can be useful in multi-user
setups to implement fine-grained access control, but it can also render the complete
web interface useless and make debugging problems painful if done without care.
</P
><P
> Don't enable this option unless you're sure that you really need it.
</P
></DD
><DT
>Examples:</DT
><DD
><P
> allow-cgi-request-crunching 1
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="SPLIT-LARGE-FORMS"
>7.5.7. split-large-forms</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Whether the CGI interface should stay compatible with broken HTTP clients.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
> <TT
CLASS="REPLACEABLE"
><I
>0 or 1</I
></TT
>
</P
></DD
><DT
>Default value:</DT
><DD
><P
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>0</I
></SPAN
></P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> The CGI form generate long GET URLs.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> <SPAN
CLASS="APPLICATION"
>Privoxy's</SPAN
> CGI forms can lead to
rather long URLs. This isn't a problem as far as the HTTP
standard is concerned, but it can confuse clients with arbitrary
URL length limitations.
</P
><P
> Enabling split-large-forms causes <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>
to divide big forms into smaller ones to keep the URL length down.
It makes editing a lot less convenient and you can no longer
submit all changes at once, but at least it works around this
browser bug.
</P
><P
> If you don't notice any editing problems, there is no reason
to enable this option, but if one of the submit buttons appears
to be broken, you should give it a try.
</P
></DD
><DT
>Examples:</DT
><DD
><P
> split-large-forms 1
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="KEEP-ALIVE-TIMEOUT"
>7.5.8. keep-alive-timeout</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Number of seconds after which an open connection will no longer be reused.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
> <TT
CLASS="REPLACEABLE"
><I
>Time in seconds.</I
></TT
>
</P
></DD
><DT
>Default value:</DT
><DD
><P
>None</P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> Connections are not reused.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> This option has no effect if <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>
has been compiled without keep-alive support.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> Note that reusing connections doesn't necessary cause speedups.
There are also a few privacy implications you should be aware of.
</P
><P
> Outgoing connections are shared between clients (if there are more
than one) and closing the client that initiated the outgoing connection
does not affect the connection between <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> and the server unless
the client's request hasn't been completed yet. If the outgoing connection
is idle, it will not be closed until either <SPAN
CLASS="APPLICATION"
>Privoxy's</SPAN
>
or the server's timeout is reached. While it's open, the server knows
that the system running <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> is still there.
</P
></DD
><DT
>Examples:</DT
><DD
><P
> keep-alive-timeout 300
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="SECT3"
><H4
CLASS="SECT3"
><A
NAME="SOCKET-TIMEOUT"
>7.5.9. socket-timeout</A
></H4
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>Specifies:</DT
><DD
><P
> Number of seconds after which a socket times out if
no data is received.
</P
></DD
><DT
>Type of value:</DT
><DD
><P
> <TT
CLASS="REPLACEABLE"
><I
>Time in seconds.</I
></TT
>
</P
></DD
><DT
>Default value:</DT
><DD
><P
>None</P
></DD
><DT
>Effect if unset:</DT
><DD
><P
> A default value of 300 seconds is used.
</P
></DD
><DT
>Notes:</DT
><DD
><P
> For SOCKS requests the timeout currently doesn't start until
the SOCKS server accepted the request. This will be fixed in
the next release.
</P
></DD
><DT
>Examples:</DT
><DD
><P
> socket-timeout 300
</P
></DD
></DL
></DIV
></DIV
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="WINDOWS-GUI"
>7.6. Windows GUI Options</A
></H2
><P
> <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> has a number of options specific to the
Windows GUI interface:</P
><A
NAME="ACTIVITY-ANIMATION"
></A
><P
> If <SPAN
CLASS="QUOTE"
>"activity-animation"</SPAN
> is set to 1, the
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> icon will animate when
<SPAN
CLASS="QUOTE"
>"Privoxy"</SPAN
> is active. To turn off, set to 0.</P
><P
> <TT
CLASS="LITERAL"
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>activity-animation 1</I
></SPAN
><br>
&nbsp;&nbsp;&nbsp;</P
>
</TT
></P
><A
NAME="LOG-MESSAGES"
></A
><P
> If <SPAN
CLASS="QUOTE"
>"log-messages"</SPAN
> is set to 1,
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> will log messages to the console
window:</P
><P
> <TT
CLASS="LITERAL"
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>log-messages 1</I
></SPAN
><br>
&nbsp;&nbsp;&nbsp;</P
>
</TT
></P
><A
NAME="LOG-BUFFER-SIZE"
></A
><P
>
If <SPAN
CLASS="QUOTE"
>"log-buffer-size"</SPAN
> is set to 1, the size of the log buffer,
i.e. the amount of memory used for the log messages displayed in the
console window, will be limited to <SPAN
CLASS="QUOTE"
>"log-max-lines"</SPAN
> (see below).</P
><P
> Warning: Setting this to 0 will result in the buffer to grow infinitely and
eat up all your memory!</P
><P
> <TT
CLASS="LITERAL"
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>log-buffer-size 1</I
></SPAN
><br>
&nbsp;&nbsp;&nbsp;</P
>
</TT
></P
><A
NAME="LOG-MAX-LINES"
></A
><P
> <SPAN
CLASS="APPLICATION"
>log-max-lines</SPAN
> is the maximum number of lines held
in the log buffer. See above.</P
><P
> <TT
CLASS="LITERAL"
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>log-max-lines 200</I
></SPAN
><br>
&nbsp;&nbsp;&nbsp;</P
>
</TT
></P
><A
NAME="LOG-HIGHLIGHT-MESSAGES"
></A
><P
> If <SPAN
CLASS="QUOTE"
>"log-highlight-messages"</SPAN
> is set to 1,
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> will highlight portions of the log
messages with a bold-faced font:</P
><P
> <TT
CLASS="LITERAL"
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>log-highlight-messages 1</I
></SPAN
><br>
&nbsp;&nbsp;&nbsp;</P
>
</TT
></P
><A
NAME="LOG-FONT-NAME"
></A
><P
> The font used in the console window:</P
><P
> <TT
CLASS="LITERAL"
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>log-font-name Comic Sans MS</I
></SPAN
><br>
&nbsp;&nbsp;&nbsp;</P
>
</TT
></P
><A
NAME="LOG-FONT-SIZE"
></A
><P
> Font size used in the console window:</P
><P
> <TT
CLASS="LITERAL"
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>log-font-size 8</I
></SPAN
><br>
&nbsp;&nbsp;&nbsp;</P
>
</TT
></P
><A
NAME="SHOW-ON-TASK-BAR"
></A
><P
>
<SPAN
CLASS="QUOTE"
>"show-on-task-bar"</SPAN
> controls whether or not
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> will appear as a button on the Task bar
when minimized:</P
><P
> <TT
CLASS="LITERAL"
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>show-on-task-bar 0</I
></SPAN
><br>
&nbsp;&nbsp;&nbsp;</P
>
</TT
></P
><A
NAME="CLOSE-BUTTON-MINIMIZES"
></A
><P
> If <SPAN
CLASS="QUOTE"
>"close-button-minimizes"</SPAN
> is set to 1, the Windows close
button will minimize <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> instead of closing
the program (close with the exit option on the File menu).</P
><P
> <TT
CLASS="LITERAL"
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>close-button-minimizes 1</I
></SPAN
><br>
&nbsp;&nbsp;&nbsp;</P
>
</TT
></P
><A
NAME="HIDE-CONSOLE"
></A
><P
> The <SPAN
CLASS="QUOTE"
>"hide-console"</SPAN
> option is specific to the MS-Win console
version of <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>. If this option is used,
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
> will disconnect from and hide the
command console.</P
><P
> <TT
CLASS="LITERAL"
> <P
CLASS="LITERALLAYOUT"
>&nbsp;&nbsp;#<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>hide-console</I
></SPAN
><br>
&nbsp;&nbsp;&nbsp;</P
>
</TT
></P
></DIV
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