Curated port reference

Port 22: SSH

SSH commonly uses port 22 over TCP. Review its purpose, traffic direction and operational security considerations.

22TCP

SSH

Encrypted remote shell, command execution and file transfer.

Typical use

Linux administration, automation, tunnels, SFTP/SCP and Git access.

Traffic direction

Client to server

Security considerations

Disable password authentication where practical, protect private keys and restrict administrative access by source network.

Secure ShellLinux