This is a neat little tool I stumbled upon. It's pretty nifty, but I have no idea if it works or not, since i don't know how to open ports myself. I just thought I'd dump it here for people to use.
http://www.yougetsignal.com/tools/open-ports/
Open port check tool.
Re: Open port check tool.
That would be awesome, but it only checks TCP, so it's useless for checking whether AA game servers are configured correctly.