From: Oscar Mechanic <oscar@ufomechanic.net>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] Problem with two providers:Need to route packets on
Date: Sat, 14 Oct 2006 11:56:14 +0000 [thread overview]
Message-ID: <1160826974.4371.12.camel@OSCARLAPLIN> (raw)
In-Reply-To: <000601c6ef81$692240f0$3b66c2d0$%lartc@neuf.fr>
There is a simple way a hard way to do this. You could use
connmark in iptables. And then use ip rule & routes to set
route based on that. As I am not going to replicate this to test
I wont try and guess commands.
Easiest configure 2 IP's on server.
DNAT like
iptables -t nat -I PREROUTING 1 -i ethA -j DNAT --to-destination
<10.0.0.A>
iptables -t nat -I PREROUTING 1 -i ethB -j DNAT --to-destination
<10.0.0.B>
ip rule add from 10.0.0.B lookup 120
ip route add default via <B ISP Address> table 120
Thats the easiest I can think of.
On Sat, 2006-10-14 at 13:10 +0200, 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.
>
>
>
>
>
>
> _______________________________________________
> LARTC mailing list
> LARTC@mailman.ds9a.nlhttp://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
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next prev parent reply other threads:[~2006-10-14 11:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-14 11:10 [LARTC] Problem with two providers:Need to route packets on the KORTA
2006-10-14 11:56 ` Oscar Mechanic [this message]
2006-10-14 17:21 ` KORTA
2006-10-14 17:44 ` [LARTC] Problem with two providers:Need to route packets Oscar Mechanic
2006-10-18 17:53 ` [LARTC] Problem with two providers:Need to route packets on the KORTA
2006-10-19 12:56 ` Alessandro Ren
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