Simple Port Tester

Simple Port Tester screenshots

Simple Port Tester is a neat application created to test TCP and UDP ports
Selecting Protocols
Simple Port Tester 3.0 : Selecting Protocols

Alternative downloads

Port Forwarding Wizard
You can Infinite port forwarding until the destination IP address is achieved.
Router Port Forwarding
Port forwarding and port triggering tool for router.
Port Forward
Windows Service which forwards any arbitrary set of local ports.