Supporting Authentication Trailer for OSPFv3
RFC 7166
Document | Type |
RFC - Proposed Standard
(March 2014; No errata)
Obsoletes RFC 6506
|
|
---|---|---|---|
Authors | Manav Bhatia , Vishwas Manral , Acee Lindem | ||
Last updated | 2018-12-20 | ||
Replaces | draft-acee-ospf-rfc6506bis | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized 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 for IPv6 (OSPFv3) [RFC5340] does not include the AuType and Authentication fields in its headers for authenticating protocol packets. Instead, OSPFv3 relies on the IPsec protocols Authentication Header (AH) [RFC4302] and Encapsulating SecurityShow full document text