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?
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. From what I could figure out the rule FORWARD is mainly for packets that go through the machine and not that much for packets originating from the machine. Is there a way to perform what I want with iptables ? Given that this is possible, another question is weather iptables changing the source ip address from a.b.c.d to x.y.z.w or not.
Thanks a lot and hopefully someone can seed light on this.
Best,
Kostas
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