Port 14567 UDP is the only port you have to forward for Battlefield 1942. If you want to have your server listed on gamespy, you might also need to forward the following ports. Allow TCP and UDP Ports 12203 Allow UDP Port 14690 Allow UDP Ports: 23000-23009 Allow UDP 22000 (This is only for LAN) # GameSpy Master Server UDP Heartbeat: Allow UDP Port 27900 # GameSpy Master Server List Request: Allow TCP Port 28900 It's also important to note that EA suggests DMZing your computer for Battlefield 1942.
Open a web browser like internet explorer or Netscape. Enter the ip address of your router in the address bar of your browser. In the picture above the address bar has http://www.google.com in it. Just replace all of that with the ip address of your router. By default the ip address should be set to 192.168.1.254.
We will list a series of lines here that will show you exactly how to forward the ports you need to forward. Battlefield 1942 requires you to forward the UDP(14567,14690,23000-23009) ports. Go ahead and enter the settings shown above into the Edit Application menu and then click Add Definition.
You should see another page of settings that need to be entered into one of the blank lines on your routers Edit Application page. Go ahead and enter those settings and then click Add Definition.
When you are finished, click the Done button at the bottom of your screen. And that is it! You are done!