Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
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I have 3 NICs, and the following is how I want to configure it;
Please, how do I do the Masquerading, NAT, and the Ip forwarding for the linux box?
What are the other necessary things to do?
Well that is a very complicated procedure. I would suggest that you install shorewall (www.shorewall.net) as firewall, and through that you will do the bridging between the interfaces. Shorewall is a strong firewall with many features and very good documentation. I am writting it because I have tried it and I actually use it. It would be also wise to install squid or some other proxy, to gain the caching features. Last it would also be good if you install a caching dns server. I know the answer is not very specific but if investigate these packages a bit you will find accurate answers.