From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alessandro Ren <alessandro.ren@opservices.com.br>
Date: Thu, 19 Oct 2006 12:56:52 +0000
Subject: Re: [LARTC] Problem with two providers:Need to route packets on the
Message-Id: <45377614.1060704@opservices.com.br>
List-Id: <lartc.vger.kernel.org>
References: <000601c6ef81$692240f0$3b66c2d0$%lartc@neuf.fr>
In-Reply-To: <000601c6ef81$692240f0$3b66c2d0$%lartc@neuf.fr>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: lartc@vger.kernel.org

KORTA wrote:
>
> Hello,
>
>  
>
> i would like to know how to resolve a problem.
>
>  
>
> I have a debian router with 3 interfaces (LAN, and two internet 
> providers (Provider A, Provider B)).
>
>  
>
> The default route is configured to use the provider A
>
>  
>
> The problem is that,
>
> When an external connection arrives from provider B to an internal 
> server (with nat),  the packet is routed to the default route:
>
> I explain:
>
> -          A packet arrives from provider B in direction of a internal 
> server
>
> -          The router performs nat operation
>
> -          The internal server generates a response
>
> -          The router routes the packet on the interface Provider A
>
>  
>
> Consequently, The connection cannot been established
>
>  
>
> I want to know if its possible to configure my debian router to route 
> packets to the interface on which packet arrives. In the example, 
> packets should have been routed by the interface connected to provider B
>
>  
>
> If yes, do you know how to do that ?
>
>  
>
> Thanks.
>
>  
>

    I think tha CONNTRACK solves this problem for you, putting packets 
that comes in and out, using PREROUTING and POSTROUTING.
    []s.

_______________________________________________
LARTC mailing list
LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc