SSH protects a network from attacks such as IP spoofing, IP source routing, and DNS spoofing. An attacker who has managed to take over a network can only force ssh to disconnect. He or she cannot play back the traffic or hijack the connection when encryption is enabled.

When using ssh's slogin (instead of rlogin) the entire login session, including transmission of password, is encrypted; therefore it is almost impossible for an outsider to collect passwords.

SSH is available for Windows, Unix, Macintosh, and OS/2, and it also works with RSA authentication.

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SSH Communications Security Ltd.
Home page of SSH Communications Security Ltd., an international software company specialized in demanding network security solutions. The company's SSH (Secure Shell) application has become the de facto standard for secure logins, and is being used by hundreds of thousands of users in more than 50 countries.

SSH FAQ
Answers general and technical questions about SSH.

Yahoo!'s SSH page
Yahoo!'s directory of SSH.