RFC 4252

The Secure Shell (SSH) Authentication Protocol, January 2006

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Updated by:
RFC 8308, RFC 8332
T. Ylonen
C. Lonvick, Ed.
secsh (sec)

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DOI:  https://doi.org/10.17487/RFC4252

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The Secure Shell Protocol (SSH) is a protocol for secure remote login and other secure network services over an insecure network. This document describes the SSH authentication protocol framework and public key, password, and host-based client authentication methods. Additional authentication methods are described in separate documents. The SSH authentication protocol runs on top of the SSH transport layer protocol and provides a single authenticated tunnel for the SSH connection protocol. [STANDARDS-TRACK]

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.

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