After spending a little time investigating online gaming on the PS3, there appears to be a lot of conflicting information with regards to what NAT is and how the PS3 classifies your NAT type. Everyone who plays online seems to spend a lot of their time (instead of actually playing games) trying to achieve a different NAT type, or thinking their NAT type is why they keep getting shot.
NAT or Network Address Translation is something which people generally can’t avoid and has become the norm in computer networking. For a device to be able to access content on the Internet they need a public IP address. There aren’t enough public IP addresses (until IPv6 is fully embraced, which is still a way off) to give every one of your devices a public address which mandates a form of translation.General CoD NAT PS3