Linux.com: Secure Remote ConnectionsApr 20, 2000, 14:07 (0 Talkback[s])
(Other stories by Scott Nipp)
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"The ability to establish a "secure" remote connection to a computer system is something very useful and important. Secure remote connections is one area that the Unix world has excelled at for years now. This ability to establish an encrypted connection to a remote computer system is also available for Linux. This allows for remote troubleshooting and administration of computer systems without the fear of compromising network security. Security is just another way that Linux is able to step up and provide enterprise level services for organizations of all sizes."
"Secure Shell, commonly referred to as SSH, is the primary means of providing "secure" connections on Unix. SSH is a freely available package that can be used as a replacement for traditional Unix services such as Telnet and FTP. SSH creates an encrypted link between two computer systems that allows all data such as user IDs, passwords, files, etc. to pass between systems with minimum risk. This encryption helps to prevent someone from "snooping" your network to capture this valuable information."
"SSH goes beyond simple Telnet and FTP though. Another excellent feature that is built into SSH is the ability to "tunnel" X protocol traffic. The X protocol is the communication mechanism behind your Graphical User Interface client server software. "Tunneling" in this case refers to sending this GUI communication across the encrypted SSH connection. This ability to "tunnel X" allows you to actually run a GUI application from the remote system and have this application actually be displayed on your local system. This in turn allows users or administrators a phenomenal amount of access to a remote system over a secure connection."
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