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I have a application which connects to my server and receives an internal ip of when it connects.

My server also has 10 external ip's and I want to route to use one of them when accessing the internet. -> should go out using 95.xx.122.63

Is there a way to do that?

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What distro or which firewall are you using? – Zoredache Oct 6 '10 at 16:29 firewall atm – user56231 Oct 7 '10 at 0:37

2 Answers 2

I suppose you are asking for snat:

iptables -t nat -A POSTROUTING -s -j SNAT --to-source 95.XX.122.63
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It is likely he will also want the a rule to handle incoming traffic as well. – Zoredache Oct 6 '10 at 16:30

Shorewall one to one NAT appears to be what you are looking for.

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