secure shell (SSH) server, for secure access from remote machines
This is the portable version of OpenSSH, a free implementation of the Secure Shell protocol as specified by the IETF secsh working group.
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Ssh (Secure Shell) is a program for logging into a remote machine and for executing commands on a remote machine.  It provides 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.  It can be used to provide applications with a secure communication channel.
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This package provides a global listener on port 22.
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In some countries it may be illegal to use any encryption at all without a special permit.