I've noticed the same issue. Party making works fine when connecting directly to the moden via ethernet, however, connection issues arise when using a router. I've checked with other sites and the issue appears to be related to the NAT type. I'm not an expert on networks but if you access your router setup menu (just use your web browser and enter the ip of the router, normally http://192.168.1.1) and somewhere there should be an interface to enable DMZ (in security settings or if there is a heading for online gaming), which I think opens up the ports to allow all online gaming features. Once DMZ is enabled, you have to enter in the ip address for your console (xbox or PS3, for PS3 check the network connection status and it will list the IP assigned to your PS3). That seemed to address the issue for me. Goodluck.
Log in to comment