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The Secure Shell (SSH) Transport Layer Protocol
RFC 4253

Revision differences

Document history

Date Rev. By Action
2020-01-21
24 (System) Received changes through RFC Editor sync (added Verified Errata tag)
2018-12-20
24 (System)
Received changes through RFC Editor sync (changed abstract to 'The Secure Shell (SSH) is a protocol for secure remote login and other secure network services …
Received changes through RFC Editor sync (changed abstract to '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]')
2015-10-14
24 (System) Notify list changed from  to (None)
2009-05-27
(System)
2009-05-18
(System)
2008-10-30
(System)
Posted related IPR disclosure: Certicom's Statement about IPR related to RFC 4346, RFC 5246, RFC 5289, RFC 4492, RFC 2409, …
Posted related IPR disclosure: Certicom's Statement about IPR related to RFC 4346, RFC 5246, RFC 5289, RFC 4492, RFC 2409, RFC 4306, RFC 4754, RFC 4753, RFC 4869, RFC 4253, RFC 2633, RFC 3278, RFC 4347, RFC 4366, RFC 4109, RFC 4252, RFC 3850, RFC 3851, RFC 5008, draft-ietf-tls-rfc43...
2006-01-10
24 (System) This was part of a ballot set with: draft-ietf-secsh-architecture, draft-ietf-secsh-assignednumbers, draft-ietf-secsh-connect, draft-ietf-secsh-userauth
2006-01-10
24 Amy Vezza [Note]: 'RFC 4253' added by Amy Vezza
2006-01-10
24 Amy Vezza State Changes to RFC Published from RFC Ed Queue by Amy Vezza
2006-01-06
24 (System) RFC published
2005-04-05
24 Amy Vezza State Changes to RFC Ed Queue from Approved-announcement sent by Amy Vezza
2005-04-04
24 Amy Vezza IESG state changed to Approved-announcement sent
2005-04-04
24 Amy Vezza IESG has approved the document
2005-04-04
24 (System) Ballot writeup text was added
2005-04-04
24 (System) Last call text was added
2005-04-04
24 (System) Ballot approval text was added
2005-04-01
24 (System) Removed from agenda for telechat - 2005-03-31
2005-03-31
24 Amy Vezza State Changes to Approved-announcement to be sent from IESG Evaluation by Amy Vezza
2005-03-17
24 Russ Housley State Changes to IESG Evaluation from IESG Evaluation::AD Followup by Russ Housley
2005-03-17
24 Russ Housley Placed on agenda for telechat - 2005-03-31 by Russ Housley
2005-03-16
24 (System) New version available: draft-ietf-secsh-transport-24.txt
2005-02-18
23 (System) New version available: draft-ietf-secsh-transport-23.txt
2004-12-10
22 (System) New version available: draft-ietf-secsh-transport-22.txt
2004-11-29
21 (System) New version available: draft-ietf-secsh-transport-21.txt
2004-11-19
20 (System) New version available: draft-ietf-secsh-transport-20.txt
2004-10-27
19 (System) New version available: draft-ietf-secsh-transport-19.txt
2004-06-03
24 (System) Sub state has been changed to AD Follow up from New Id Needed
2004-06-03
18 (System) New version available: draft-ietf-secsh-transport-18.txt
2003-10-27
17 (System) New version available: draft-ietf-secsh-transport-17.txt
2003-10-08
24 Russ Housley State Changes to IESG Evaluation::Revised ID Needed from IESG Evaluation::AD Followup by Russ Housley
2003-09-04
24 Amy Vezza Removed from agenda for telechat - 2003-09-04 by Amy Vezza
2003-09-04
24 Amy Vezza State Changes to IESG Evaluation::AD Followup from IESG Evaluation by Amy Vezza
2003-07-24
16 (System) New version available: draft-ietf-secsh-transport-16.txt
2002-09-23
15 (System) New version available: draft-ietf-secsh-transport-15.txt
2002-04-17
24 Stephen Coya
State Changes to Wait for Writeup                                  from Last Call …
State Changes to Wait for Writeup                                  from Last Call Issued                                  by Steve Coya
2002-03-27
24 (System) Last call sent
2002-03-25
14 (System) New version available: draft-ietf-secsh-transport-14.txt
2002-03-04
13 (System) New version available: draft-ietf-secsh-transport-13.txt
2002-02-01
12 (System) New version available: draft-ietf-secsh-transport-12.txt
2001-11-26
11 (System) New version available: draft-ietf-secsh-transport-11.txt
2001-03-05
10 (System) New version available: draft-ietf-secsh-transport-10.txt
2001-01-09
09 (System) New version available: draft-ietf-secsh-transport-09.txt
2000-11-27
08 (System) New version available: draft-ietf-secsh-transport-08.txt
2000-05-11
07 (System) New version available: draft-ietf-secsh-transport-07.txt
1999-06-22
06 (System) New version available: draft-ietf-secsh-transport-06.txt
1999-02-22
05 (System) New version available: draft-ietf-secsh-transport-05.txt
1998-08-14
04 (System) New version available: draft-ietf-secsh-transport-04.txt
1998-03-17
03 (System) New version available: draft-ietf-secsh-transport-03.txt
1997-10-14
02 (System) New version available: draft-ietf-secsh-transport-02.txt
1997-07-31
01 (System) New version available: draft-ietf-secsh-transport-01.txt
1997-03-26
00 (System) New version available: draft-ietf-secsh-transport-00.txt