Secure Shell (SSH) improves security for UCAR computers

Increasing attempts to gain unauthorized access to UCAR computing systems brought about a ban on the use of cleartext passwords from outside the security perimeter. You are affected by this change if you log in to a UCAR computer, or if you use FTP, Telnet, or IRJE to transfer files.

SSH is now required for access from outside the UCAR security perimeter. As of 1 August 2001, all inbound, authenticated connections to most UCAR systems must use Secure Shell technology to encrypt communications. The SCD News story, Security perimeter tightens, introduces this change. If you are affected, please read this news story and the supporting web pages it recommends.

Detailed information on SSH is provided by the O'Reilly & Associates book SSH, The Secure Shell: The Definitive Guide.

Photo courtesy of O'Reilly & Associates, Daniel J. Barrett, and Richard Silverman