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Date:      Wed, 27 Mar 2002 15:38:01 -0800
From:      "Crist J. Clark" <cjc@FreeBSD.ORG>
To:        Szabados Jozsef <szabadosjozsef@freemail.hu>
Cc:        freebsd-ipfw@FreeBSD.ORG
Subject:   Re: transparent proxying
Message-ID:  <20020327153801.T89885@blossom.cjclark.org>
In-Reply-To: <freemail.20020227133246.60118@fm2.freemail.hu>; from szabadosjozsef@freemail.hu on Wed, Mar 27, 2002 at 01:32:46PM %2B0100
References:  <freemail.20020227123005.5030@fm1.freemail.hu> <freemail.20020227133246.60118@fm2.freemail.hu>

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On Wed, Mar 27, 2002 at 01:32:46PM +0100, Szabados Jozsef wrote:
> Sorry, I forgot the subject.
> 
> Szabados Jozsef <szabadosjozsef@freemail.hu> írta:
> 
> > Hi!
> > 
> > I would need some starting info about transparent proxying.
> > 
> > So, first I forward the packet, on port xx to 127.0.0.1:xxxx
> > the proxy get the packet, and it will see the destination ip
> > 127.0.0.1, isn't it?

It will be _delivered_ to 127.0.0.1

> > So how can I find out the original
> > destination
> > ip address of the packet?

Read it out of the packet. 'fwd' makes no modifications to the
packet.
-- 
Crist J. Clark                     |     cjclark@alum.mit.edu
                                   |     cjclark@jhu.edu
http://people.freebsd.org/~cjc/    |     cjc@freebsd.org

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