Hosting on Gamespy from behind firewall/NAT

I've spent a couple of evenings trying to host.  I've read the FAQs, searched the net, etc. etc. etc.   If anybody knows exactly what ports have to be opened, what has to be redirected to be able to host please let me know!

Here's my situation: OpenBSD firewall running ipnat and ipfilter.  My PC is on a home LAN.  The (NATed) PC is 192.168.1.2. All net stuff is working just fine.  I can play on others' hosts (Gamespy and dedicated). But when I get on Gamespy and create a room it doesn't show up in the host list.  Gamespy's help files are less than helpful.  I have total control over my firewall and LAN, so if I can just get the right info I'm sure I can make this work.

From looking at my firewall logs, I'm not blocking anything from Gamespy.  What is the missing bit of info I need?

Thanks!

Moving to troubleshooting

Which ports did you forward to your LAN PC? Here's an article dealing with it: http://www.theavonlady.org/theofpfaq/mp/firewall.htm

192.168.1.2 is an address on your local LAN, and not the one that your firewall is reporting to the outside world.

To find out what your external IP address is, go here. The clients need to connect to the external IP address in order to reach your server. Obviously, the NAT/PAT settings need to be correct as well, or it still won't work.

GS uses the port above your gameserver so be sure to open it. E.g. server runs on 2234 (default). Open firewall port 2234 and 2235 to 192.168.1.2. Use Port Forwarding on 2234 and 2235 to 192.168.1.2 since you're using NAT.

You say that the firewall isn't blocking anything but when I started a DS server with cfg file and had MasterIP= set to GS' server, GS started banging on my port 2235. I'm not sure about hosting servers thru GS tho, but try my suggestion first.

-Rekrul