The Secure Shell (SSH) Transport Layer Protocol

Metadata

Publisher: IETF
Doc Type: Standard
Pages: 32
Abstract: The Secure Shell (SSH) is a protocol for secure remote login and other secure network services over an insecure network. This document describes the SSH transport layer protocol, which typically runs on top of TCP/IP. The protocol can be used as a basis for a number of secure network services. It provides strong encryption, server authentication, and integrity protection. It may also provide compression. Key exchange method, public key algorithm, symmetric encryption algorithm, message authentication algorithm, and hash algorithm are all negotiated. This document also describes the Diffie-Hellman key exchange method and the minimal set of algorithms that are needed to implement the SSH transport layer protocol. [STANDARDS-TRACK]
Publication Date: 2006-01-01
Status Note: Proposed Standard
DOI: 10.17487/RFC4253
Link: https://doi.org/10.17487/RFC4253
Author(s): Tatu Ylonen
Chris M. Lonvick
Keyword(s): Remote Login, Encryption, Authentication, Integrity, Diffie-Hellman

Latest version of IETF RFC 4253

Document Versions — IETF RFC 4253

▶ IETF RFC 4253 (2006-01-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Amended by:

RFC6668 NOT IN REGISTRY
RFC8268 NOT IN REGISTRY
RFC8308 NOT IN REGISTRY
RFC8332 NOT IN REGISTRY
RFC8709 NOT IN REGISTRY
RFC8758 NOT IN REGISTRY
RFC9142 NOT IN REGISTRY

Normative Reference(s)

ISBN.9780471117094 — 7. Menezes A. van Oorshot P. Vanstone S. , Handbook of Applied Cryptography , CRC Press , 1997 . EXTERNAL
NIST FIPS 46-3 [Withdrawn]
NIST FIPS 180-2 [Withdrawn]
NIST FIPS PUB 186-2 [Withdrawn]
NIST FIPS 197 [Superseded]
Schneier, B., "The Twofish Encryptions Algorithm: A 128-Bit Block Cipher, 1st Edition", March 1999. EXTERNAL
IETF RFC 1321 [Active*]
IETF RFC 1950 [Active*]
IETF RFC 1951 [Active*]
IETF RFC 2104 [Active, Amended*]
IETF RFC 2119 [Active*]
IETF RFC 2144 [Active*]
IETF RFC 2409 [Superseded*]
IETF RFC 2434 [Superseded*]
IETF RFC 2440 [Superseded*]
IETF RFC 3066 [Superseded*]
IETF RFC 3447 [Superseded*]
IETF RFC 3526 [Active*]
IETF RFC 3629 [Active*]
IETF RFC 4250 [Active*]
IETF RFC 4251 [Active*]
IETF RFC 4252 [Active*]
IETF RFC 4254 [Active*]

Bibliographic Reference(s)

Ylonen, T., "ssh-1.2.30/RFC", File within compressed tarball ftp://ftp.funet.fi/pub/unix/security/ login/ssh/ssh-1.2.30.tar.gz , November 1995. EXTERNAL
IETF RFC 894 [Active*]
IETF RFC 1661 [Active*]
IETF RFC 2412 [Active*]

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doi: 10.17487/RFC4253
url: https://doi.org/10.17487/RFC4253

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Referenced By

IETF RFC 4250 [Active*]
IETF RFC 4251 [Active*]
IETF RFC 4252 [Active*]
IETF RFC 4254 [Active*]
IETF RFC 4742 [Superseded*]
IETF RFC 5114 [Active*]
IETF RFC 5592 [Active*]
IETF RFC 5656 [Active*]
IETF RFC 6242 [Active*]