Settings to play nba online over router? which ports ?

Does anyone know which ports have to be opened to play nba over direct ip. I have a router and i cant host a game. I can play with others if they host, but i cant host. please help me!

That's right, me too, if I host, I can't play, if others host, we can play, something's strange...

not sure which are the exact ports but you can always put your pc in DMZ for the time you play online. remember to turn it off afterwards as security drops while it's on