+ By default, <application>Privoxy</application> only responds to requests
+ from <literal>127.0.0.1</literal> (localhost). To have it act as a server for
+ a network, this needs to be changed in the <ulink
+ url="../user-manual/config.html">main configuration file</ulink>. Look for
+ the <literal><ulink
+ url="../user-manual/config.html#LISTEN-ADDRESS">listen-address</ulink></literal>
+ option, which may be commented out with a <quote>#</quote> symbol. Make sure
+ it is uncommented, and assign it the address of the LAN gateway interface,
+ and port number to use. Assuming your server's LAN address is 192.168.1.1 and you
+ wish to run <application>Privoxy</application> on port 8118, this line
+ should look like:
+</para>
+
+<para>
+ <screen>
+ listen-address 192.168.1.1:8118</screen>
+</para>
+
+<para>
+ Save the file, and restart <application>Privoxy</application>. Configure
+ all browsers on the network then to use this address and port number.
+</para>
+
+<para>
+ Alternately, you can have <application>Privoxy</application> listen on
+ all available interfaces:
+</para>
+
+<para>
+ <screen>
+ listen-address :8118</screen>
+</para>
+
+<para>
+ And then use <application>Privoxy's</application>
+ <ulink
+ url="../user-manual/config.html#PERMIT-ACCESS">permit-access</ulink>
+ feature to limit connections. A firewall in this situation is recommended
+ as well.
+</para>
+
+<para>
+ The above steps should be the same for any TCP network, regardless of
+ operating system.
+</para>
+
+<para>
+ If you run <application>Privoxy</application> on a LAN with untrusted users,
+ we recommend that you double-check all <ulink
+ url="../user-manual/config.html#ACCESS-CONTROL">access control and security</ulink>
+ options!
+</para>
+
+</sect2>
+
+
+<sect2 renderas="sect3">
+<title id="noseeum">Instead of ads, now I get a checkerboard pattern. I don't want to see anything.</title>
+<para>
+ The replacement for blocked images can be controlled with the <ulink
+ url="../user-manual/actions-file.html#SET-IMAGE-BLOCKER"><literal>set-image-blocker</literal>
+ action</ulink>. You have the choice of a checkerboard pattern, a transparent 1x1 GIF
+ image (aka <quote>blank</quote>), or a redirect to a custom image of your choice.
+ Note that this choice only has effect for images which are blocked as images, i.e.
+ whose URLs match both a <literal><ulink
+ url="../user-manual/actions-file.html#HANDLE-AS-IMAGE">handle-as-image</ulink></literal>
+ <emphasis>and</emphasis> <literal><ulink
+ url="../user-manual/actions-file.html#BLOCK">block</ulink></literal> action.
+</para>
+<para>
+ If you want to see nothing, then change the <ulink
+ url="../user-manual/actions-file.html#SET-IMAGE-BLOCKER"><literal>set-image-blocker</literal>
+ action</ulink> to <quote>blank</quote>. This can be done by editing the
+ <filename>default.action</filename> file, or trough the <ulink
+ url="http://config.privoxy.org/show-status">web-based actions file editor</ulink>.
+</para>
+
+</sect2>
+
+<sect2 renderas="sect3">
+<title id="whyseeum">Why would anybody want to see a checkerboard pattern?</title>
+<para>
+ Remember that <link linkend="whatsanad">telling which image is an ad and which
+ isn't</link>, is mostly guesswork. While we hope that the standard configuration
+ is rather smart, it can and will make errors. The checkerboard image is visually
+ decent, but it shows you that and where images were blocked, which can be very
+ helpful in case some navigation aid or otherwise innocent image was
+ erraneously blocked. Some people might also enjoy seeing how many banners
+ they <emphasis>don't</emphasis> have to see..
+</para>
+
+</sect2>
+
+<!-- This has changed with the adaptive "blocked" page
+
+<sect2 renderas="sect3">
+<title id="blockedisugly">I see large red banners on some pages that say
+<quote>Blocked</quote>. Why and how do I get rid of this?</title>
+<para>
+ These are URLs that match something in one of
+ <application>Privoxy's</application> block actions
+ (<ulink
+ url="../user-manual/actions-file.html#BLOCK"><quote>+block</quote></ulink>).
+ It is meant to be a warning so that you know something has been blocked and
+ an easy way for you to see why. These are handled differently than what has
+ been defined explicitly as <quote>images</quote> (e.g. ads that are GIF image
+ files). Depending on the URL itself, it is sometimes hard for
+ <application>Privoxy</application> to really know whether there is indeed an
+ ad image there or not. And there are limitations as to what
+ <application>Privoxy</application> can do to <quote>fool</quote> the
+ browser.
+</para>
+
+<para>
+ For instance, if the ad is in a frame, then it is embedded in the separate
+ HTML page used for the frame. In this case, you cannot just substitute an
+ aribitrary image (like we would for a <quote>blank</quote> image), for an HTML
+ page. The browser is expecting an HTML page, and that is what it must have
+ for frames. Such situations can be a little trickier to deal with, and
+ <application>Privoxy</application> may show the <quote>Blocked</quote> page,
+ despite your best efforts.
+</para>
+
+<para>
+ If you want these to be treated as if they were images, so that they can be
+ made invisible, you can try moving the offending URL from the
+ <quote>+block</quote> section to the <quote>+imageblock</quote> section of
+ your actions file. Just be forewarned, if any URL is made
+ <quote>invisible</quote>, you may not have any inkling that something has
+ been removed from that page, or why. If this approach does not work, then you are
+ probably dealing with a frame (or <quote>ilayer</quote>), and the only thing
+ that can go there is an HTML page of some sort.
+</para>
+<para>
+ To deal with this situation, you could modify the
+ <quote><filename>block</filename></quote> HTML template that is used by
+ <application>Privoxy</application> to display this, and make it something
+ more to your liking. Currently, there is no configuration option for this.
+ You will have to modify, or create your own page, and use this to replace
+ <filename>templates/blocked</filename>, which is what
+ <application>Privoxy</application> uses to display the <quote>Blocked</quote>
+ page.
+</para>
+<para>
+ Another way to deal with this is find why and where
+ <application>Privoxy</application> is blocking the frame, and
+ diable this. Then let the <quote>+set-image-blocker</quote> action
+ handle the ad that is embedded in the frame's HTML page.
+</para>
+
+</sect2>
+
+<sect2 renderas="sect3" id="alliseeisred">
+<title>I cannot see all of the <quote>Blocked</quote> page banner. Help.</title>
+<para>
+ There is not enough available space to fit the entire Blocked page. Try right
+ clicking on the visible portion, and select <quote>Show Frame</quote>,
+ or equivalent. This will usually allow you to see the entire Privoxy
+ <quote>Blocked</quote> page, and from there you can see just what is being
+ blocked, and why.
+</para>
+<para>
+ As of Privoxy 2.9.14, the Blocked banner page is re-sizeable, and tries
+ to adjust to the allotted space. There may be occassions where there
+ just isn't enough room to display much of anything useful though.
+
+</para>
+</sect2>
+
+-->
+
+<sect2 renderas="sect3">
+<title id="blockedbytext">I see some images being replaced by a text
+instead of the checkerboard image. Why and how do I get rid of this?</title>
+<para>
+ This happens when the banners are not embedded in the HTML code of the
+ page itself, but in separate HTML (sub)documents that are loaded into (i)frames
+ or (i)layers, and these external HTML documents are blocked. Being non-images
+ they get replaced by a substitute HTML page rather than a substitute image,
+ which wouldn't work out technically, since the browser expects and accepts
+ only HTML when it has requested an HTML document.