Knowing The Program That accessed the Computer ports

To know the used ports by program, type this following command on the command prompt.

netstate -an -no | find/i "Listening"

The process ID was on the most right side,and if you would like to know what the program that have had that process ID, just Ctr + Alt + Delete to show the task manager

furthermore on task manager, select view --> select columns --> and choose PID (Process Identifier)