Supporting Authentication Trailer for OSPFv3
RFC 7166
| Document | Type |
RFC - Proposed Standard
(March 2014; No errata)
Obsoletes RFC 6506
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Replaces | draft-acee-ospf-rfc6506bis | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Abhay Roy | ||
| Shepherd write-up | Show (last changed 2013-10-25) | ||
| IESG | IESG state | RFC 7166 (Proposed Standard) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Alia Atlas | ||
| Send notices to | (None) | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | RFC-Ed-Ack | ||
Internet Engineering Task Force (IETF) M. Bhatia
Request for Comments: 7166 Alcatel-Lucent
Obsoletes: 6506 V. Manral
Category: Standards Track Ionos Corp.
ISSN: 2070-1721 A. Lindem
Ericsson
March 2014
Supporting Authentication Trailer for OSPFv3
Abstract
Currently, OSPF for IPv6 (OSPFv3) uses IPsec as the only mechanism
for authenticating protocol packets. This behavior is different from
authentication mechanisms present in other routing protocols (OSPFv2,
Intermediate System to Intermediate System (IS-IS), RIP, and Routing
Information Protocol Next Generation (RIPng)). In some environments,
it has been found that IPsec is difficult to configure and maintain
and thus cannot be used. This document defines an alternative
mechanism to authenticate OSPFv3 protocol packets so that OSPFv3 does
not depend only upon IPsec for authentication.
The OSPFv3 Authentication Trailer was originally defined in RFC 6506.
This document obsoletes RFC 6506 by providing a revised definition,
including clarifications and refinements of the procedures.
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/rfc7166.
Bhatia, et al. Standards Track [Page 1]
RFC 7166 Authentication Trailer for OSPFv3 March 2014
Copyright Notice
Copyright (c) 2014 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.
Table of Contents
1. Introduction ....................................................3
1.1. Requirements ...............................................4
1.2. Summary of Changes from RFC 6506 ...........................4
2. Proposed Solution ...............................................5
2.1. AT-Bit in Options Field ....................................5
2.2. Basic Operation ............................................6
2.3. IPv6 Source Address Protection .............................6
3. OSPFv3 Security Association .....................................7
4. Authentication Procedure ........................................9
4.1. Authentication Trailer .....................................9
4.1.1. Sequence Number Wrap ...............................11
4.2. OSPFv3 Header Checksum and LLS Data Block Checksum ........11
4.3. Cryptographic Authentication Procedure ....................12
4.4. Cross-Protocol Attack Mitigation ..........................12
4.5. Cryptographic Aspects .....................................12
4.6. Message Verification ......................................15
5. Migration and Backward Compatibility ...........................16
6. Security Considerations ........................................17
7. IANA Considerations ............................................18
8. References .....................................................19
8.1. Normative References ......................................19
8.2. Informative References ....................................19
Appendix A. Acknowledgments .......................................22
Bhatia, et al. Standards Track [Page 2]
RFC 7166 Authentication Trailer for OSPFv3 March 2014
1. Introduction
Unlike Open Shortest Path First version 2 (OSPFv2) [RFC2328], OSPF
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