SEcure Neighbor Discovery (SEND) Source Address Validation Improvement (SAVI)
RFC 7219
| Document | Type |
RFC - Proposed Standard
(May 2014; No errata)
Was draft-ietf-savi-send (savi WG)
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Replaces | draft-bagnulo-savi-send | ||
| Stream | IETF | ||
| Formats | plain text pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Jean-Michel Combes | ||
| Shepherd write-up | Show (last changed 2014-01-07) | ||
| IESG | IESG state | RFC 7219 (Proposed Standard) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Ted Lemon | ||
| IESG note | The Document Shepherd is Jean-Michel Combes (jeanmichel.combes at gmail.com). | ||
| Send notices to | (None) | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | No IANA Actions | ||
Internet Engineering Task Force (IETF) M. Bagnulo
Request for Comments: 7219 A. Garcia-Martinez
Category: Standards Track UC3M
ISSN: 2070-1721 May 2014
SEcure Neighbor Discovery (SEND)
Source Address Validation Improvement (SAVI)
Abstract
This memo specifies SEcure Neighbor Discovery (SEND) Source Address
Validation Improvement (SAVI), a mechanism to provide source address
validation using the SEND protocol. The proposed mechanism
complements ingress filtering techniques to provide a finer
granularity on the control of IPv6 source addresses.
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/rfc7219.
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.
Bagnulo & Garcia-Martinez Standards Track [Page 1]
RFC 7219 SEND SAVI May 2014
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 4
2. Background on SEND SAVI . . . . . . . . . . . . . . . . . . . 4
2.1. Address Validation Scope . . . . . . . . . . . . . . . . 4
2.2. Binding Creation for SEND SAVI . . . . . . . . . . . . . 4
2.3. SEND SAVI Protection Perimeter . . . . . . . . . . . . . 7
2.4. Special Cases . . . . . . . . . . . . . . . . . . . . . . 9
3. SEND SAVI Specification . . . . . . . . . . . . . . . . . . . 11
3.1. SEND SAVI Data Structures . . . . . . . . . . . . . . . . 11
3.2. SEND SAVI Device Configuration . . . . . . . . . . . . . 12
3.3. Traffic Processing . . . . . . . . . . . . . . . . . . . 13
3.3.1. Transit Traffic Processing . . . . . . . . . . . . . 13
3.3.2. Local Traffic Processing . . . . . . . . . . . . . . 13
3.4. SEND SAVI Port Configuration Guidelines . . . . . . . . . 27
3.5. VLAN Support . . . . . . . . . . . . . . . . . . . . . . 28
3.6. Protocol Constants . . . . . . . . . . . . . . . . . . . 28
4. Protocol Walk-Through . . . . . . . . . . . . . . . . . . . . 29
4.1. Change of the Attachment Point of a Host . . . . . . . . 29
4.1.1. Moving to a Port of the Same Switch . . . . . . . . . 29
4.1.2. Moving to a Port of a Different Switch . . . . . . . 30
4.2. Attack of a Malicious Host . . . . . . . . . . . . . . . 31
4.2.1. M Attaches to the Same Switch as the Victim's Switch 31
4.2.2. M Attaches to a Different Switch to the Victim's
Switch . . . . . . . . . . . . . . . . . . . . . . . 32
5. Security Considerations . . . . . . . . . . . . . . . . . . . 33
5.1. Protection against Replay Attacks . . . . . . . . . . . . 33
5.2. Protection against Denial-of-Service Attacks . . . . . . 34
5.3. Considerations on the Deployment Model for Trust Anchors 36
5.4. Residual Threats . . . . . . . . . . . . . . . . . . . . 36
5.5. Privacy Considerations . . . . . . . . . . . . . . . . . 37
6. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 37
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.1. Normative References . . . . . . . . . . . . . . . . . . 37
7.2. Informative References . . . . . . . . . . . . . . . . . 38
Bagnulo & Garcia-Martinez Standards Track [Page 2]
RFC 7219 SEND SAVI May 2014
1. Introduction
This memo specifies SEND SAVI, a mechanism to provide source address
validation for IPv6 networks using the SEND protocol [RFC3971]. The
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