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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 39723] New: - Forward proxy does not work in tranparent mode
Date Mon, 05 Jun 2006 11:50:37 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=39723

           Summary: Forward proxy does not work in tranparent mode
           Product: Apache httpd-2
           Version: 2.2.2
          Platform: Other
        OS/Version: other
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mod_proxy
        AssignedTo: bugs@httpd.apache.org
        ReportedBy: nicolas.mailhot@laposte.net


I'm trying to setup a transparent caching forward proxy for my LAN.
In transparent mode forward proxy users are not aware they're passing through a
proxy, the networking layers silently tunnel web requests through the forward proxy.

I got the forward caching proxy part working (I think) : when a LAN browser is
configured to use myip:myport as proxy things work

I also got the networking magic working : requests sent by LAN browsers not
configured to use the proxy do end up in apache, as evidenced by apache logs

The problem is when I put the two together proxying is not working anymore. A
browser will do a "GET http://foo.org/bar/" and the apache logs will show "GET
/bar/" -> all requests are interpreted by apache as local

People on the netfilter list say 
"Well, if Apache sees the traffic on port 8081 then your redirect is working as
it should. Netfilter does nothing with the contents of the packets, just with
the addresses and ports."

Googling for mod_proxy+transparent yields a ton of results, but none of them
seem useful. So it seems it's an apache problem, either on the code or
documentation side. At least I couldn't find any solution after searching for hours.

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