[snipes]

Originally Posted by pjmanyun

How do I make sure MOA(AA) is firewall enabled?

Depends on what kind of firewall are you using.

For most firewall programs though, all you have to do is open up your firewall program, find and view the list of Internet Applications allowed to hook up to the internet, and then press Add A New Allowed Application, browse for a shortcut to play MOHAA and enter that in, or just add MOHAA.exe from the [Drive and Path]Program Files/EA GAMES/MOHAA folder (both work just as well).

It should be that simple.