I have several ports open for some applications to function (e.g. Unreal Tournament). However, my router doesnt tie the port rules to specific applications, only to IP (of the PC behind the router) and protocol....is this a security hole? I dont notice any unusual data activity, however Peerguardian reports a lot of connections being made (in particular to the 2 ports I opened for P2P).
getting the router online was the tricky part