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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Here’s an apache module that might be useful for some
people:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a href="http://stderr.net/apache/rpaf/">http://stderr.net/apache/rpaf/</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>It’s similar to “mod_extracted_forward’. It
rewrites the remote_addr for apache on the backend, so that Apache logs will
see the client IP address and not varnish server’s address. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I also added this to the .vcl as was recommended in the Varnish
FAQ:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<pre><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>sub vcl_recv {<o:p></o:p></span></font></pre><pre><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> # Add a unique header containing the client address<o:p></o:p></span></font></pre><pre><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> remove req.http.X-Forwarded-For;<o:p></o:p></span></font></pre><pre><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> set req.http.X-Forwarded-For = client.ip;<o:p></o:p></span></font></pre><pre><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> # [...]<o:p></o:p></span></font></pre><pre><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>}<o:p></o:p></span></font></pre>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>It’s also useful if you’re using mod_bwshare –
and are trying to throttle usage by IP address. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>------</span></font><font face=Arial><span style='font-family:
Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Brian Y. Pan</span></font><font face=Arial><span
style='font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Light Management Consulting LLC</span></font><font
face=Arial><span style='font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=SV style='font-size:10.0pt;
font-family:Arial'>Princeton, NJ 08540 USA</span></font><font
face=Arial><span lang=SV style='font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Arial><span lang=SV style='font-size:12.0pt;
font-family:Arial'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=SV style='font-size:10.0pt;
font-family:Arial'>Tel: +1 (609) 651-4779</span></font><font face=Arial><span
lang=SV style='font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=SV style='font-size:10.0pt;
font-family:Arial'>Fax: +1 (609) 651-4799</span></font><font face=Arial><span
lang=SV style='font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Arial><span lang=SV style='font-size:12.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
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