Secure Shell

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A program for logging into, and executing commands on, a remote computer. Secure Shell is intended to replace rlogin and rsh, and provide secure encrypted communications between two untrusted hosts over an insecure network. X11 connections and arbitrary TCP/IP ports can also be forwarded over the secure channel.

The program is common as a Unix shell program, but there exists implementations for most modern platforms, including Microsoft Windows (where one of the most popular is Putty).

A second version is named SSH2.

see also telnet, OpenSSH

This article (or an earlier version of it) contains material from FOLDOC, used with permission.