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)
|
|
---|---|---|---|
Authors | Marcelo Bagnulo , Alberto Garcia-Martinez | ||
Last updated | 2015-10-14 | ||
Replaces | draft-bagnulo-savi-send | ||
Stream | IETF | ||
Formats | plain text html 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]. TheShow full document text