Short for secure shell, SSH (developed by SSH Communications Security Ltd.) is a secure protocol for remote logins. Using an SSH client, a user can connect to a server to transfer information in a more secure manner than other methods, such as telnet. The image is an example of how an SSH session, which uses a command line interface, may look.

Computer abbreviations, Network terms, Protocol, Pty, PuTTY, rlogin, rsh, Security terms, SSHD

SSH defaults to port 22.

  • See the Linux slogin command for further information about the Linux and Unix OpenSSH remote login command.
  • See the Linux scp command for additional information about secure file copying.
  • Network and network card help and support.
  • Computer security help and support.
  • A great free SSH client is PuTTY.