This is in support of TraderEarl because he is correct with his comments.
Opening/Closing ports does not change the latency or bandwitdth available to your PS3. What it does is allows functions, such as the mic, which requires a specific port to be open in order for THAT traffic to be allowed.
This is from a tutorial that I wrote a while back.
There is no guarantee that these will not change or that you may need to add more in the future. Just to show you that changes are made those were the ports listed on the Playstation website. Here are the current listings.
SCEA Game Servers
All games published by SCEA (first-party) may use the following ports for communication with SCEA (first-party) game servers:
TCP Ports: 80, 443, 5223, and 10070 - 10080
UDP Ports: 3478, 3479, 3658, 10070, and 50100
PlayStation®Network
TCP Ports: 80, 443, 5223
UDP Ports: 3478, 3479, 3658
PLAYSTATION®3 Remote Play
If the router in use supports UPnP, enable the router’s UPnP function.
If the router does not support UPnP, you must set the router’s port forwarding to allow communications to the PLAYSTATION 3 from the Internet.
The port number that is used by remote play is TCP Port: 9293
USB or Bluetooth Headsets
TCP Port: 80
UDP Ports: 6000 - 7000, 50000, 10070
Syphon Filter: The Omega Strain
TCP Port: 3658 --- If I am not mistaken that is for Demonware servers, same as COD4.
PlayOnline and Final Fantasy XI
TCP Ports: 25, 80, 110, 443, and 50000 - 65535
UDP Ports: 50000 - 65535
Other Games
If you need port numbers for games published by third-party companies, contact the publisher of the software title directly. See Game Support Contacts for contact information.
So while you can still connect to the servers or other functions, the strict might simply mean the port for mic access isn't open. Only one port blocked will give you a strict NAT.
