Ok well my internet works fine , I'm on a ethernet wired connection , I can connect to anything fine , but when I was in Black Ops multiplayer , the whole time it spent saying "fethcing stats" then it said it couldn't conenct to the servers. this also happened when I tried to start a server in Megaglest (game ) . It said my firewall or connection wasn't properly configured to create a server.

So my question is what do I have to do to configure my network ?