A new Request for Comments is now available in online RFC libraries.
RFC 4253
Title: The Secure Shell (SSH) Transport Layer Protocol
Author(s): T. Ylonen, C. Lonvick, Ed.
Status: Standards Track
Date: January 2006
Mailbox: ylo@ssh.com, clonvick@cisco.com
Pages: 32
Characters: 68263
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-secsh-transport-24.txt
URL: ftp://ftp.rfc-editor.org/in-notes/rfc4253.txt
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.
This document is a product of the Secure Shell Working Group of the
IETF.
This is now a Proposed Standard Protocol.
This document specifies an Internet standards track protocol for
the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the
"Internet Official Protocol Standards" (STD 1) for the
standardization state and status of this protocol. Distribution
of this memo is unlimited.
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USC/Information Sciences Institute
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