Routing between two networks on linux?

Posted by gGololicic on Server Fault See other posts from Server Fault or by gGololicic
Published on 2012-11-29T01:09:55Z Indexed on 2012/11/29 5:07 UTC
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linux

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networking

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routing

I got stuck with one problem I cant find solution. I have linux pc with two NIC. first nic (eth1) is connected to public ip (probably switch or whatever, doesnt really mater) so eth1 is connected to wan and another eth0 that I connected to switch and make it a lan nic. configuration:

eth1 ip address 88.200.1xx.xxx //xxx's are cuz of security reasons eth0 ip address 192.168.1.1

wan ------> [eth1 (linux PC) eth0]<---->[switch]<----> [eth1 (PC1)]

Now I want to connect this two networks, so PC1 can access linux PC and wan. I think I know how to do it but I cant confiugre it right. This is what I tried:

I turend on ip forwarding (for sure)
I set eth1 default gw to the right ip on the wan
I tried to set eth0 default gw to the same ip (but i couldnt)

What or how can I do this, I was trying with linux route command, but I got stuck. Please help.

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