No connectivity to servers

[Professorson]

i was recently at a LAN center trying to play PR with some friends it was the first time we'd been to this place..

but could not connect to PR for example Xfire couldnt even ping servers, and when i tried to open the game and join a server by IP it wouldn't be able to connect. Internet connection was not the problem as we were able to play other games...

How can this be fixed ? is it ports that need to be unblocked by them ? if so what ones

[MaSSive]

Default BF2 ports nothing more.

Port Usage - BF2 Technical Information Wiki