Architectures & Technologies

• SSH (Secure Shell)

  • Features
    • Replacement for Unix r-commands (rsh, rcp, etc)
    • Public Key Packet Encryption Methodology
    • Client and Server Authentication
    • Reduce Network Eavesdropping Exposure
  • Problems
    • Limited Desktop Support
    • Slow Connection Startup Time
    • Scaling Issues for Large Populations
    • Can be Used to Tunnel Through Firewalls

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We installed SSH servers on our centrally administered compute clusters. This was done as an interim solution to defeat network eavesdropping for sites requiring secure communication channels. Good integration for Unix r-command and X11 applications. End user support issues and limited desktop clients for the MS Windows and Macintosh environments are of concern.

http://www.cs.hut.fi/ssh/

http://www.uni-karlsruhe.de/~ig25/ssh-faq/