Secure Shell (SSH)
The secure shell (SSH) is now the de facto standard for remote logins to other machines. It replaces old, insecure programs like telnet and rlogin. In addition to being a good example of a stand-alone server (for the purposes of this book, at least), SSH has these features:
Encrypts your password and all other session data, protecting you from snoopers.
Tunnels other network connections, including those from X Window System clients. Tunneling is the process of packaging and transporting a network connection using another network connection. The advantages of using SSH to tunnel X Window System connections are that SSH sets up the display environment for you and encrypts the X data inside the tunnel.
Has clients for almost every ...
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