IPtables scds port redirection

[gbr3]

Hi there

I have small problem with redirecting ports with iptables.
I want to set up second machine to host l4d servers.
First machine has direct access to the internet on 1 interface and internal network on 2 interface, it all looks like this:

server2->switch->eth2(main server)eth1->internet

I can redirect port it all looks to be good because friends can connect but it is not listed in server browser.

My questions:
What else should be redirected?
What commands do you use to redirect a port with IPtables (ive googled and tried many examples but not all works or works partially)

Please help

[realchamp]

Are you running the first server as a DHCP server? If not, just switch around on the switch and server main server.