I"m having a problem connecting with my buddy for moo2 online play. We are connecting via the internet not a lan game. I've given my buddy the ip, but he isn't able to find my game. I didn't see anywhere that we couldn't connect via the net, and my ip addy is correct. Is there somthing I'm missing here? I am using the gog network host application for dosbox included with the game.
I'm using a 2wire 3800HGV-B Gateway. Is it possible that the gateway is killing the connection? I'm not sure how to let dosbox through the gateway if it is the problem. Any help would be appreciated.

The Host of the game needs to forward port 213 (UDP) for it to work. Hope that helps. =)

Yes, I read that on another website dedicated to the game. I've also read this:
http://findports.com/article/master-of-orion-ii
I haven't had a chance to try 213 yet but I will post when I find out what works. Thanks for the help my Commonwealth brethren!

ok so the find ports thing suggests that I use 15000 internal and external, but I dunno what I need to forward the ip address to??

Did you follow the suggestions here: http://www.gog.com/en/forum/master_of_orion/moo_ii_online_dosbox_guide/page1

Yes. Have worked this for 3 days.

You can try contacting GOG support. (As a warning they can take awhile to respond.)

My friend and I are having the same problem, trying the port forwarding dosent seem to help (though im no IT guy). And the website seems to refuse to let me send a support email.

The host hosts, the client puts in the host's IP and on the dosbox. we get a unable to connect message. the game starts anyway and nothing shows up in multiplayer

You might try Hamachi or otherwise set yourself up a VPN which should eliminate any issues dealing with NAT or port forwarding.