Which TCP port number is used by SSH (Secure Shell)?

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Multiple Choice

Which TCP port number is used by SSH (Secure Shell)?

SSH uses port 22 by default, using TCP to establish a secure remote login session. This port is what servers listen on for SSH connections, and clients connect to it to securely authenticate and run commands. While it’s common to keep this default, some administrators change it to a different port for additional obscurity. The other numbers listed correspond to other protocols: 20 and 21 are used by FTP (data and control channels), and 23 is Telnet, an older unencrypted protocol.

SSH uses port 22 by default, using TCP to establish a secure remote login session. This port is what servers listen on for SSH connections, and clients connect to it to securely authenticate and run commands. While it’s common to keep this default, some administrators change it to a different port for additional obscurity. The other numbers listed correspond to other protocols: 20 and 21 are used by FTP (data and control channels), and 23 is Telnet, an older unencrypted protocol.

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