What is ssh and why should I use it?
It is a Unix program/shell for secure connections (It is also available on most other platforms, such as Mac OSX, Windows XP, and VMS). If you were to use telnet instead, your password (and everything else) is in “clear text” over network lines, and can be read by anyone with a network sniffer. In response to DOE mandates, telnet has been discontinued at PPPL.
