guys dili ko ka find ug matches on COD5 multiplayer via IWNET.

am using globe broadband then ako gi share ug router. NAT settings are open but when i try to connect thru IWNET i can't find other players

i have no problems with COD4 or with other on line games like left4dead 1 and 2. sa COD5 ra gyud ko dili ka connect. what am i doing wrong here?