You should refer to logical ports, generally referring to ports in TCP/IP protocol. Port numbers range from 0 to 65535, such as port 80 for browsing web services, port 2 1 for FTP services and so on.

Click "Start → Run", type "cmd" and press enter. In the command prompt window that opens, type netstat -a -n and press enter to display the port number and status of TCP and UDP connections in digital form. Below the address is the port number.