firewall server routing setup

[steeles]

Hi all,

Thanks for the input. I have a difficult situation that needs all help.

currently setup is WAN router connect to a switch, then all workstations connect to switch, router and workstation are using same subnet, like 168.1.X.X

What I want is to setup a firewall server (2 NIC cards) between Router and swith.

how do I setup this firewall without changing WAN router configuration? Another word, if this case, two NIC cards will have same IP subnet, but how is routing going to work?

Thanks.

[framp]

I don't think you will be able to insert the router without changing either the WLAN router defs or to change the clients. One of them has to have a different net. Depending on the WLAN router IP there is a small possibility to set the netmask of both sides of the router such that there will be two different nets created...

[steeles]

someone mentioned to use bridge mode, and ip forwarding, how can I configure it?

please help.

[k_amisi]

echo 1 > /proc/net/ipv4/ip_forward

This will enable forwading

[framp]

someone mentioned to use bridge mode, and ip forwarding, how can I configure it?

please help.

That's a prerequisite. But in any case you need two different networks ...