Recommendations on filtering of IPv4 packets containing IPv4 options
draft-ietf-opsec-ip-options-filtering-02

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Document Type Active Internet-Draft (opsec WG)
Last updated 2013-01-26
Replaces draft-gont-opsec-ip-options-filtering
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Operational Security Capabilities for                            F. Gont
IP Network Infrastructure (opsec)                 UTN-FRH / SI6 Networks
Internet-Draft                                               R. Atkinson
Intended status: BCP                                          Consultant
Expires: July 31, 2013                                      C. Pignataro
                                                                   Cisco
                                                        January 27, 2013

  Recommendations on filtering of IPv4 packets containing IPv4 options
              draft-ietf-opsec-ip-options-filtering-02.txt

Abstract

   This document document provides advice on the filtering of IPv4
   packets based on the IPv4 options they contain.  Additionally, it
   discusses the operational and interoperability implications of
   dropping packets based on the IP 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 July 31, 2013.

Copyright Notice

   Copyright (c) 2013 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

Gont, et al.              Expires July 31, 2013                 [Page 1]
Internet-Draft      Filtering of IP-optioned packets        January 2013

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Terminology and Conventions Used in This Document  . . . .  3
   2.  IP Options . . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  General Security Implications of IP options  . . . . . . . . .  5
     3.1.  Processing Requirements  . . . . . . . . . . . . . . . . .  5
   4.  Advice on the Handling of Packets with Specific IP Options . .  6
     4.1.  End of Option List (Type = 0)  . . . . . . . . . . . . . .  6
     4.2.  No Operation (Type = 1)  . . . . . . . . . . . . . . . . .  7
     4.3.  Loose Source and Record Route (LSRR) (Type = 131)  . . . .  7
     4.4.  Strict Source and Record Route (SSRR) (Type = 137) . . . .  9
     4.5.  Record Route (Type = 7)  . . . . . . . . . . . . . . . . . 10
     4.6.  Stream Identifier (Type = 136) (obsolete)  . . . . . . . . 11
     4.7.  Internet Timestamp (Type = 68) . . . . . . . . . . . . . . 12
     4.8.  Router Alert (Type = 148)  . . . . . . . . . . . . . . . . 13
     4.9.  Probe MTU (Type = 11) (obsolete) . . . . . . . . . . . . . 14
     4.10. Reply MTU (Type = 12) (obsolete) . . . . . . . . . . . . . 14
     4.11. Traceroute (Type = 82) . . . . . . . . . . . . . . . . . . 15
     4.12. DoD Basic Security Option (Type = 130) . . . . . . . . . . 16
     4.13. DoD Extended Security Option (Type = 133)  . . . . . . . . 17
     4.14. Commercial IP Security Option (CIPSO) (Type = 134) . . . . 19
     4.15. VISA (Type = 142)  . . . . . . . . . . . . . . . . . . . . 20
     4.16. Extended Internet Protocol (Type = 145)  . . . . . . . . . 20
     4.17. Address Extension (Type = 147) . . . . . . . . . . . . . . 21
     4.18. Sender Directed Multi-Destination Delivery (Type = 149)  . 22
     4.19. Dynamic Packet State (Type = 151)  . . . . . . . . . . . . 22
     4.20. Upstream Multicast Pkt. (Type = 152) . . . . . . . . . . . 23
     4.21. Quick-Start (Type = 25)  . . . . . . . . . . . . . . . . . 23
     4.22. RFC3692-style Experiment (Types = 30, 94, 158, and 222)  . 25
     4.23. Other IP Options . . . . . . . . . . . . . . . . . . . . . 25
   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 26
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 27
   7.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 27
   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 27
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