You may have to get a bit more advanced with your connection and makes some changes in your router's configuration. I usually suggest either setting up a custom IP address for the PS3 in the router's DCHP area or you can set the PS3 up in the router's DMZ (demilitarized zone) which places it outside any firewalls the router has in place. Your router's manual (found on the CD that came with it) will show how to do it.