Instructions
Turn on the PlayStation 3 and navigate to the "Settings" option on the main menu.
Scroll down and select "Network Settings" by clicking "X" on the gamepad.
Highlight "Internet Connection Settings" and press "X" to run the test.
Wait for the test to complete and check to the right of the "NAT Type." Type 1 means that the connection on the PS3 is going directly to the internet, type 2 means that the PS3 is connection through a router and Type 3 means that there is a problem with the connection.