Which port does SSH use?

Which port does SSH use?

• A. 23
• B. 49
• C. 22
• D. 111

Answer: (C)

SSH stands for Secure Shell and is used for securely logging into and administering a remote system. It runs over TCP to ensure reliable, encrypted communication. By default, the SSH server listens on port 22, which is the standard port assigned for SSH. You can change this listening port in the server’s configuration or by specifying a different port on the client, but 22 is the conventional default. The other ports listed correspond to different services: 23 is used by Telnet (unencrypted), 49 is associated with TACACS+, and 111 is used by RPC bind. They aren’t the default port for SSH.

SSH stands for Secure Shell and is used for securely logging into and administering a remote system. It runs over TCP to ensure reliable, encrypted communication. By default, the SSH server listens on port 22, which is the standard port assigned for SSH. You can change this listening port in the server’s configuration or by specifying a different port on the client, but 22 is the conventional default.

The other ports listed correspond to different services: 23 is used by Telnet (unencrypted), 49 is associated with TACACS+, and 111 is used by RPC bind. They aren’t the default port for SSH.