Port 22 — SSH
Quick reference for TCP/UDP port 22, used by SSH. Includes what the service does, security guidance and related ports.
What is port 22?
Secure Shell remote login and SFTP.
What port does SSH use?
SSH listens on port 22 by default.
Security guidance
High risk — do not expose to the internet
Port 22 (SSH) is high-risk because the service it carries is a frequent target for credential attacks, brute force or unpatched-vulnerability scanning. Keep it bound to localhost or your VPN, never forward it directly on a router, and require strong authentication.
Related ports
Frequently asked
What is port 22 used for?+
Port 22 is the standard TCP/UDP port for SSH. Secure Shell remote login and SFTP.
What port does SSH use?+
SSH listens on port 22 by default.
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