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Date:      Wed, 5 Mar 2003 08:32:08 -0800
From:      Darcy Buskermolen <darcy@wavefire.com>
To:        "soheil soheil" <soheil_hh@hotmail.com>, freebsd-net@freebsd.org
Subject:   Re: Transparent Proxy
Message-ID:  <200303050832.08348.darcy@wavefire.com>
In-Reply-To: <F88C0Yjzp4ITnESxfXy00005ead@hotmail.com>
References:  <F88C0Yjzp4ITnESxfXy00005ead@hotmail.com>

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I thank everybody who took the time to reply to me, and I found the probl=
em,=20
my fwd/skipto rules needed to be after the divert rules.



On Wednesday 05 March 2003 03:19, soheil soheil wrote:
> I think if you add the following rule to the ipfw rules on 192.168.0.1 =
(
> the squid-running host ) you can have your proxy working.
>
> skipto 510 tcp from 192.168.0.1 to any dst-port 80
>
>
>
> From: Darcy Buskermolen <darcy@wavefire.com>
>
> >To: freebsd-net@freebsd.org
> >Subject: Transparent Proxy
> >Date: Tue, 25 Feb 2003 16:42:09 -0800
> >
> >
> >(Promoted to -net due to lack of responces on -questions)
> >
> >
> >I'm trying to deploy a transparent proxy server for a friend's office =
but
> >have
> >run into a couple of snags that I can't seam to find the correct answe=
r
> >for.
> >Please see http://home2.dbitech.bc.ca:8080/netconfig.txt for graphical
> >topology
> >
> >Note that I'm running IPFW2 on both BSD boxes.
> >
> >ipfw list output on 192.168.0.254:
> >
> >00001 skipto 50000 tcp from any 1023-65535 to me dst-port 22
> >00040 skipto 50 tcp from 192.168.0.1 to any dst-port 80
> >00048 fwd 192.168.0.1 tcp from 192.168.0.0/24 to any dst-port 80 out
> >00999 divert 8669 ip from any to any via ed0
> >65533 allow ip from any to any
> >65535 deny ip from any to any
> >
> >ipfw list output on 192.168.0.1:
> >
> >00500 fwd 127.0.0.1,3128 ip from 192.168.0.0/16 to any dst-port 80 in
> >65000 allow ip from any to any
> >65535 deny ip from any to any
> >
> >When the windows box (192.168.0.32) makes a web request it gets forwar=
ded
> >to
> >the squid machine fine, and squid returns a "access denied" error mess=
age,
> >checking the cache.log on squid I see the reason is as follows:
> >
> >2003/02/20 04:19:47| WARNING: Forwarding loop detected for:
> >GET / HTTP/1.0
> >
> >All the information I can find online regaring setting up transparent
> >proxying
> >for squid using ipfw shows squid running on the gateway host, or on a
> >diffrent network segment.  Can anybody point me in the correct directi=
on
> > to tell me what it is that I'm missing?
> >
> >--
> >Darcy Buskermolen
> >Wavefire Technologies Corp.
> >ph: 250.717.0200
> >fx:  250.763.1759
> >http://www.wavefire.com
> >
> >To Unsubscribe: send mail to majordomo@FreeBSD.org
> >with "unsubscribe freebsd-net" in the body of the message
>
> _________________________________________________________________
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--=20
Darcy Buskermolen
Wavefire Technologies Corp.
ph: 250.717.0200
fx:  250.763.1759
http://www.wavefire.com

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