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32bitsonline.com : Secure Shell Configuration and Installation

Aug 10, 1999, 16:12 (1 Talkback[s])
(Other stories by Ido Dubrawsky)

[ Thanks to Fred Mobach for this link. ]

"Security on the Internet today is becoming a hot topic. Whereas only a decade ago the number of break-ins to sites was relatively small, today, as companies realize that being unconnected is akin to being out-of-business, the number of attacks and break-ins have skyrocketed. Many times, a break-in occurs because of insecure communications within a corporate network or from a service provider. Almost all communications in computer networks are unencrypted. Because of this, anyone who has access to a machine connected to a network can sniff, or spy, on the communications occurring on the network."

"When a user logs into a network through telnet the password is sent across as plain text. This fact is easily exploitable by an attacker to use existing accounts to further an infiltration attempt into a network. Once access has been gained to a network, the contents of that network and it's integrity become suspect. Other attack methods can be used to gain network access as well. These methods include connection hijacking and route spoofing. In order to protect and secure networks and systems, encrypted communication along with cryptographic authentication are required. These properties help protect the integrity of a communication session. This is where Secure Shell excels."

"In this article, we will examine the installation and configuration of Secure Shell V 1.2.27. This version of the software is available under the GNU GPL. Secure Shell V. 2.0.13 is no longer available under the GNU GPL and is only available for unlicensed use by non- commercial organizations. The Secure Shell software has become the standard for secure, encrypted communication."

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