Best port forwording program?

Windose is screwing with my ports so I need a good program to diagnosis what ports are going out and working, have not had to deal with ports in awhile so I've forgotten alot.

Port forward is done on the router not the PC netstat will tell you what's being used but what ports are open from the net is controlled by router

Samuria said:

Port forward is done on the router not the PC netstat will tell you what's being used but what ports are open from the net is controlled by router

I really meant port scanning not forwarding persay ><

I have to scan to see whats working,ect.