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High Performance SSH/SCP

9 days ago
https://www.psc.edu/hpn-ssh-home/
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  • #SSH
  • #Networking
  • #High Performance Computing
  • HPN-SSH is a modified version of OpenSSH designed for high-speed, long-distance networks.
  • Developed by the Pittsburgh Supercomputing Center (PSC) to improve SSH/SCP performance.
  • Key features include optimized receive buffers, encryption disabling post-authentication, and multi-core AES-CTR cipher support.
  • Latest release (18.6.2) includes a parallelized ChaCha20-Poly1305 cipher, 59% faster than OpenSSH 9.4.
  • Available for Ubuntu, Debian, and Fedora via package repositories.
  • Supported by NSF grant (Award#: 2004012) for further development.
  • Key improvements: automatic transfer resumption, AES-NI integration, parallel CHACHA20 cipher, network telemetry, HMAC pipelining, and better packaging.
  • Users can support HPN-SSH via donations to PSC.
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