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Date:      Thu, 21 Apr 2005 10:08:54 -0500
From:      dave baukus <dbaukus@chiaro.com>
To:        Andre <andre@netvision.com.br>
Cc:        freebsd-net@freebsd.org
Subject:   Re: How to set the source IP of TCP connections?
Message-ID:  <4267C206.3020506@chiaro.com>
In-Reply-To: <20050421145256.GA50738@server.home>
References:  <20050421145256.GA50738@server.home>

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Can you not configure the loop back w/ the address
then bind to it and connect to the forgein end ?
It's not exactly what  you want, but I think its a game
some apps play.

Andre wrote:
> How can I open a TCP connection with a source IP
> address that's not configured on the machine?
> 
> I've created a proxy (like Squid but for another
> protocol), and I use ipfw fwd to get the client's
> TCP connections to this proxy.
> 
> The problem is that the connections that the proxy
> open have the source IP address of the machine where
> the proxy is running on.
> 
> What I'd like to do is to use the IP address of the
> client as the source IP address of connections opened
> by the proxy for that client.
> 
> Any way to do this in FreeBSD 4 or 5?
> 
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> 

-- 
Dave Baukus
dbaukus@chiaro.com			
	Chiaro Networks Ltd.
	Richardson, Texas
	USA



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