[ Thanks to David for
this link. ]
“Secure Shell is a program to log into another computer over a
network, to execute commands in a remote machine, and to move files
from one machine to another. It provides strong authentication and
secure communications over unsecure channels. It is intended as a
replacement for telnet, rlogin, rsh, and rcp. For SSH2, there is a
replacement for FTP: sftp.”