IPv6 Router Advertisement Guard
RFC 6105
| Document | Type |
RFC - Informational
(February 2011; No errata)
Updated by RFC 7113
|
|
|---|---|---|---|
| Authors | Gunter Van de Velde , János Mohácsi , Eric Levy-Abegnoli , Chip Popoviciu | ||
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6105 (Informational) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Ron Bonica | ||
| Send notices to | (None) | ||
Internet Engineering Task Force (IETF) E. Levy-Abegnoli
Request for Comments: 6105 G. Van de Velde
Category: Informational Cisco Systems
ISSN: 2070-1721 C. Popoviciu
Technodyne
J. Mohacsi
NIIF/Hungarnet
February 2011
IPv6 Router Advertisement Guard
Abstract
Routed protocols are often susceptible to spoof attacks. The
canonical solution for IPv6 is Secure Neighbor Discovery (SEND), a
solution that is non-trivial to deploy. This document proposes a
light-weight alternative and complement to SEND based on filtering in
the layer-2 network fabric, using a variety of filtering criteria,
including, for example, SEND status.
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/rfc6105.
Levy-Abegnoli, et al. Informational [Page 1]
RFC 6105 IPv6 RA-Guard February 2011
Copyright Notice
Copyright (c) 2011 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
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described in the Simplified BSD License.
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
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material may not have granted the IETF Trust the right to allow
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Without obtaining an adequate license from the person(s) controlling
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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 ....................................................3
2. Model and Applicability .........................................3
3. Stateless RA-Guard ..............................................5
4. Stateful RA-Guard ...............................................6
4.1. State Machine ..............................................6
4.2. SEND-Based RA-Guard ........................................8
5. RA-Guard Use Considerations .....................................8
6. Security Considerations .........................................9
7. Acknowledgements ................................................9
8. References ......................................................9
8.1. Normative References .......................................9
8.2. Informative References .....................................9
Levy-Abegnoli, et al. Informational [Page 2]
RFC 6105 IPv6 RA-Guard February 2011
1. Introduction
When operating IPv6 in a shared layer-2 (L2) network segment without
complete SEcure Neighbor Discovery (SEND) support by all devices
connected or without the availability of the infrastructure necessary
to support SEND [RFC3971], there is always the risk of facing
operational problems due to rogue Router Advertisements (RAs)
generated maliciously or unintentionally by unauthorized or
improperly configured routers connecting to the segment.
There are several examples of work done on this topic that resulted
in related studies and code, including [NDPMON] [KAME]
[IPv6-SAMURAIS]. This document describes a solution framework for
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