What is the port number for SSH?

SSH = port 22 (TCP).

SSH = Port 22 (TCP)

SSH (Secure Shell) provides encrypted remote access to systems.

Memory tip: "Two-Two" (22) is easy to remember - two 2's for the secure twin of Telnet!

Replaced: Telnet (port 23) - SSH is the secure alternative.

Go deeper:

• Secure Shell — Wikipedia overview confirming TCP port 22 (chosen to sit between FTP 21 and Telnet 23).
• List of TCP and UDP port numbers — the broader lookup table placing 22 among the well-known ports.