Port Map is a simple port forwarding application for the Mac. With it, you have no need to setup your router. Just run the program, and it opens your port(s). When you are done, your port(s) close when you quit Port Map.
I use Port Map. It works well for me. Macworld gives it 5 out of 5 mice. You can find the review here:
http://www.macworld.com/article/140439/2009/06/portmap.htmlYou can download
Port Map here:
http://www.codingmonkeys.de/portmap/. Remember, set it up for port 6260 UDP and TCP. Good Luck.