What is uPnP because i want to enable it on my ps3?

Question

Is it universal plug and play? please explain.

Answer 1

Yes, it's universal plug and play.

It's basically a protocol for automatically configuring network devices. A common usage is for automatic port forwarding.

Your PS3 will use it for purposes that vary by game. There's no harm in enabling it. It's operation is completely on demand. If a game doesn't use it, nothing will happen.