datatracker.ietf.org
Sign in
Version 5.6.4.p1, 2014-10-20
Report a bug

A SAVI Solution for WLAN
draft-bi-savi-wlan-06

Document type: Active Internet-Draft (individual)
Document stream: No stream defined
Last updated: 2014-08-07
Intended RFC status: Unknown
Other versions: plain text, pdf, html

Stream State:No stream defined
Document shepherd: No shepherd assigned

IESG State: I-D Exists
Responsible AD: (None)
Send notices to: No addresses provided

Network Working Group                                           J. Bi
Internet Draft                                                  J. Wu
Intended status: Standard Tracks                              Y. Wang
Expires: February, 2015                            Tsinghua University
                                                               T. Lin
                                          Hangzhou H3C Tech. Co., Ltd.
                                                        August 7, 2014

                         A SAVI Solution for WLAN

                         draft-bi-savi-wlan-06.txt

Abstract

   This document describes a source address validation solution for WLAN
   enabling 802.11i or other security mechanisms. This mechanism snoops
   NDP and DHCP packets to bind IP address to MAC address, and relies on
   the security of MAC address guaranteed by 802.11i or other mechanisms
   to filter IP spoofing packets. It can work in the special situations
   described in the charter of SAVI(Source Address Validation
   Improvements) workgroup, such as multiple MAC addresses on one
   interface. This document describes three different deployment
   scenarios, with solutions for migration of binding entries when hosts
   move from one access point to another.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time. It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on February 8, 2015.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Bi, et al.            Expires February 8, 2015                [Page 1]
Internet-Draft                SAVI WLAN                    August 2014

   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 ................................................ 2
   2. Conventions used in this document............................ 3
   3. IP-MAC Binding .............................................. 3
      3.1. Data Structures......................................... 3
         3.1.1. IP-MAC Mapping Table............................... 3
         3.1.2. MAC-IP Mapping Table............................... 4
      3.2. Pre-conditions for binding.............................. 4
      3.3. Binding IP addresses to MAC addresses................... 4
      3.4. Binding Migration....................................... 5
      3.5. Binding Clearing........................................ 5
   4. Source Address Validation.................................... 6
   5. Deployment Scenarios......................................... 6
      5.1. Centralized WLAN........................................ 6
         5.1.1. AP Filtering....................................... 7
            5.1.1.1. Candidate Binding............................. 7
            5.1.1.2. Packet Filtering.............................. 7
            5.1.1.3. CAPWAP Extension.............................. 7
            5.1.1.4. Mobility Solution............................. 9
         5.1.2. AC Filtering...................................... 10
      5.2. Autonomous WLAN........................................ 10
   6. Security Considerations..................................... 10
   7. IANA Considerations ........................................ 11
   8. Acknowledgments ............................................ 11
   9. References ................................................. 11
      9.1. Normative References................................... 11
      9.2. Informative References................................. 12

1. Introduction

   This document describes a mechanism to perform per packet IP source
   address validation in WLAN. This mechanism performs ND snooping or

[include full document text]