SSH
If you are looking for remote access to a system in a secure manner, you could use Secure Shell (SSH), a protocol series designed to facilitate secure network functions across an insecure network. SSH provides direct support for secure remote login, secure file transfer, and secure forwarding of TCP/IP and X Window System traffic. An SSH connection is an encrypted channel, providing for confidentiality and integrity protection.
SSH has its origins all the way back in the beginning of the UNIX operating system. An original component of UNIX, Telnet allowed users to connect between systems. Although Telnet is still used today, it has some drawbacks, as discussed in the preceding section. Some enterprising University of California, Berkeley, ...
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