Thanks a lot. I am checking iproute2 now but can you give any pointers/hints.
Thanks a lot,
Kostas
--- On Tue, 11/9/10, Jan Engelhardt <jengelh@xxxxxxxxxx> wrote:
> From: Jan Engelhardt <jengelh@xxxxxxxxxx>
> Subject: Re: Redirecting flows among one machine's interfaces
> To: "Kostas Pelechrinis" <kpele_ntua@xxxxxxxxx>
> Cc: netfilter@xxxxxxxxxxxxxxx
> Date: Tuesday, November 9, 2010, 6:33 PM
> On Tuesday 2010-11-09 23:59, Kostas
> Pelechrinis wrote:
>
> >Hi all,
> >
> >I am not very familiar with iptables, but what I am
> trying to achieve
> >is the following:
> >
> >I have a machine with two interfaces (let's say if1 --
> with ip address
> >a.b.c.d -- and if2 -- with ip address x.y.z.w) both
> connected to the
> >internet. One of the two interfaces is the default
> interface (e.g.,
> >if1). Whatever flow is initiated towards a
> destination in the Internet
> >is going out if1. I want to use iptables in order
> to redirect some of
> >the flows to if2. Is there a way to do this using
> iptables?
>
> Using -j MARK and iproute2 policy routing.
>
> >I have tried some rules (e.g., iptables -A FORWARD -d
> k.l.m.n -o if2 -j
> >ACCEPT // where k.l.m.n is the destination ip address
> of the flow I
> >want to redirect) but with no luck.
>
> Well guess why: it _tests_ whether the outgoing interface
> is (already)
> if2.
>
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