Internet Engineering Task Force (IETF) C. Kaufman
Request for Comments: 5996 Microsoft
Obsoletes: 4306, 4718 P. Hoffman
Category: Standards Track VPN Consortium
ISSN: 2070-1721 Y. Nir
Check Point
P. Eronen
Independent
September 2010
Internet Key Exchange Protocol Version 2 (IKEv2)
Abstract
This document describes version 2 of the Internet Key Exchange (IKE)
protocol. IKE is a component of IPsec used for performing mutual
authentication and establishing and maintaining Security Associations
(SAs). This document replaces and updates RFC 4306, and includes all
of the clarifications from RFC 4718.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc5996.
Kaufman, et al. Standards Track [Page 1]
RFC 5996 IKEv2bis September 2010
Copyright Notice
Copyright (c) 2010 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Table of Contents
1. Introduction ....................................................5
1.1. Usage Scenarios ............................................6
1.1.1. Security Gateway to Security Gateway in
Tunnel Mode .........................................7
1.1.2. Endpoint-to-Endpoint Transport Mode .................7
1.1.3. Endpoint to Security Gateway in Tunnel Mode .........8
1.1.4. Other Scenarios .....................................9
1.2. The Initial Exchanges ......................................9
1.3. The CREATE_CHILD_SA Exchange ..............................13
1.3.1. Creating New Child SAs with the
CREATE_CHILD_SA Exchange ...........................14
1.3.2. Rekeying IKE SAs with the CREATE_CHILD_SA
Exchange ...........................................15
1.3.3. Rekeying Child SAs with the CREATE_CHILD_SA
Exchange ...........................................16
1.4. The INFORMATIONAL Exchange ................................17
1.4.1. Deleting an SA with INFORMATIONAL Exchanges ........17
1.5. Informational Messages outside of an IKE SA ...............18
1.6. Requirements Terminology ..................................19
Kaufman, et al. Standards Track [Page 2]
RFC 5996 IKEv2bis September 2010
1.7. Significant Differences between RFC 4306 and This
Document ..................................................20
datatracker.ietf.org