Private Netgame help

I've been working on this problem for quite a bit now. Although I've forwarded the proper ports for my SRB2 private net games, no one can join. I've tested on my own computer (Two instances of SRB2) and I still can't join. The port testers say that the port is not open when it is. I've even used the portforward.com SRB2 version.

Can anybody help?

Use a program called "Hamachi". It is very very usefull for private netgaming. I use it allot, for the reason that it's the only way I can host.