I have a similar problem with hosting games and instead of creating a new topic, I'd rather ask here:
I have a router, everything should work perfect.
My "internet server" toggle is on "yes", I've forwarded the port 5029 UDP.
I don't see anything left to do.
Problem is... people still won't see me on the masterserver.
The default masterserver is srb2.servegames.org:28900 whereas other people don't have that ":28900" thing. I thought this was supposed to be the port I should open, so I did it. Still doesn't work. Cue? Any advice?