The SSH protocol uses which of the following port?

Secure Shell (SSH) can be used to establish a secure session for remote logins, as well as to remotely execute programs and transfer files. SSH operates on port 22. SSH has mainly superseded the insecure Telnet protocol, which operates on port 23. File Transfer Protocol (FTP) uses port 21, and Simple Mail Transfer Protocol (SMTP) uses port 25. (SMTP).