List of Port numbers in Windows Below is the list of TCP/UDP  port numbers being used in windows Port TCP UDP Description 9 UDP Wake-on-LAN 20 TCP UDP FTP data transfer 21 TCP FTP control (command) 22 TCP UDP Secure Shell (SSH) — used for secure logins,  file transfers (scp, sftp) and port forwarding 23 TCP UDP Telnet protocol—unencrypted text […]