Recommendations on filtering of IPv6 packets containing IPv6 Extension Headers
draft-gont-opsec-ipv6-eh-filtering-00

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Document Type Active Internet-Draft (individual)
Last updated 2014-07-04
Replaced by draft-ietf-opsec-ipv6-eh-filtering
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opsec                                                            F. Gont
Internet-Draft                                    UTN-FRH / SI6 Networks
Intended status: Best Current Practice                            W. Liu
Expires: January 5, 2015                             Huawei Technologies
                                                               R. Bonica
                                                        Juniper Networks
                                                            July 4, 2014

 Recommendations on filtering of IPv6 packets containing IPv6 Extension
                                Headers
               draft-gont-opsec-ipv6-eh-filtering-00.txt

Abstract

   This document document provides advice on the filtering of IPv6
   packets based on the IPv6 Extension Headers and the IPv6 options they
   contain.  Additionally, it discusses the operational and
   interoperability implications of dropping packets based on the IPv6
   Extension Headers and IPv6 options they contain.

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 January 5, 2015.

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

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Internet-Draft     Filtering of IPv6 packets with EHs          July 2014

   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
     1.1.  Terminology and Conventions Used in This Document . . . .   3
   2.  IPv6 Extension Headers  . . . . . . . . . . . . . . . . . . .   3
     2.1.  General Discussion  . . . . . . . . . . . . . . . . . . .   3
     2.2.  General Security Implications . . . . . . . . . . . . . .   3
     2.3.  Advice on the Handling of IPv6 Packets with Specific IPv6
           Extension Headers . . . . . . . . . . . . . . . . . . . .   3
   3.  IPv6 Options  . . . . . . . . . . . . . . . . . . . . . . . .  10
     3.1.  General Discussion  . . . . . . . . . . . . . . . . . . .  10
     3.2.  General Security Implications of IPv6 Options . . . . . .  10
     3.3.  Advice on the Handling of Packets with Specific IPv6
           Options . . . . . . . . . . . . . . . . . . . . . . . . .  11
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  22
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  22
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  22
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  22
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  22
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  24
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  25

1.  Introduction

   This document document discusses the filtering of IPv6 packets based
   on the IPv6 Extension Headers and the IPv6 options they contain.
   Since various protocols may use IPv6 Extension Headers (possibly with
   IPv6 options), dropping packets based on the the IPv6 Extension
   Headers or IPv6 options they contain may have implications on the
   proper functioning of such protocols.  Thus, this document attempts
   to discuss the operational and interoperability implications of such
   dropping, and provide advice in this area.  Additionally, it outlines
   what an administrator should do in a typical enterprise environments.
   This document is similar in nature to [RFC7123], which addresses the
   same problem for the IPv4 case.

   Section 2 of this document discusses IPv6 extension headers and IPv6
   options, and provides advice in the area of filtering IPv6 packets
   that contain such IPv6 Extension Headers and/or options.

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