LinuxQuestions.org - routing over virtual interface

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routing over virtual interface

I have a virtual linux box sitting on a ESX server. I would like to setup a virtual interface on that box (eth0:0) and assign an IP address: 192.169.25.1 - that's the easy part.

The hard part: if anything comes to that IP address, I would like to redirect it to a particular subnet (basically, making it a router) - does anyone know how to achieve that?

Thanks.

If the main purpose of that virtual linux box is to serve as a router, then rather install a router like Smoothwall, which is actually a dedicated Linux system with modest system requirements acting as a router. Have a look at http://www.smoothwall.org/ for more info on this.

The other solution would be to add some forwarding and masquerading commands to your firewall.
Something like this maybe

Quote:

iptables -t nat -A PREROUTING -p tcp -i eth0 -d Y.Y.Y.Y --dport 80 -j DNAT --to Z.Z.Z.Z:80
iptables -A FORWARD -p tcp -i eth0 -d Z.Z.Z.Z --dport 80 -j ACCEPT

There has been a thread on linuxquestions.org lately about port forwarding - browse or Google for it.

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