Keying and Authentication for Routing Protocols (KARP) Design Guidelines
RFC 6518
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RFC - Informational
(February 2012; No errata)
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Last updated |
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2015-10-14
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IETF
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plain text
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Submitted to IESG for Publication
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Document shepherd |
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No shepherd assigned
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IESG state |
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RFC 6518 (Informational)
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Unknown
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Responsible AD |
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Stewart Bryant
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Joel Halpern (jmh@joelhalpern.com) is the document shepherd.
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(None)
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Internet Engineering Task Force (IETF) G. Lebovitz
Request for Comments: 6518 M. Bhatia
Category: Informational Alcatel-Lucent
ISSN: 2070-1721 February 2012
Keying and Authentication for Routing Protocols (KARP)
Design Guidelines
Abstract
This document is one of a series concerned with defining a roadmap of
protocol specification work for the use of modern cryptographic
mechanisms and algorithms for message authentication in routing
protocols. In particular, it defines the framework for a key
management protocol that may be used to create and manage session
keys for message authentication and integrity.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
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). Not all documents
approved by the IESG are a candidate for any level of Internet
Standard; see 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/rfc6518.
Lebovitz & Bhatia Informational [Page 1]
RFC 6518 KARP Design Guidelines February 2012
Copyright Notice
Copyright (c) 2012 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. Conventions Used in This Document ..........................4
2. Categorizing Routing Protocols ..................................5
2.1. Category: Message Transaction Type .........................5
2.2. Category: Peer versus Group Keying .........................6
3. Consider the Future Existence of a Key Management Protocol ......6
3.1. Consider Asymmetric Keys ...................................7
3.2. Cryptographic Keys Life Cycle ..............................8
4. Roadmap .........................................................9
4.1. Work Phases on Any Particular Protocol .....................9
4.2. Work Items per Routing Protocol ...........................11
5. Routing Protocols in Categories ................................13
6. Supporting Incremental Deployment ..............................16
7. Denial-of-Service Attacks ......................................17
8. Gap Analysis ...................................................18
9. Security Considerations ........................................20
9.1. Use Strong Keys ...........................................21
9.2. Internal versus External Operation ........................22
9.3. Unique versus Shared Keys .................................22
9.4. Key Exchange Mechanism ....................................24
10. Acknowledgments ...............................................26
11. References ....................................................26
11.1. Normative References ....................................26
11.2. Informative References ..................................26
Lebovitz & Bhatia Informational [Page 2]
RFC 6518 KARP Design Guidelines February 2012
1. Introduction
In March 2006, the Internet Architecture Board (IAB) held a workshop
on the topic of "Unwanted Internet Traffic". The report from that
workshop is documented in RFC 4948 [RFC4948]. Section 8.1 of that
document states that "A simple risk analysis would suggest that an
ideal attack target of minimal cost but maximal disruption is the
core routing infrastructure". Section 8.2 calls for "[t]ightening
the security of the core routing infrastructure". Four main steps
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