Secure DHCPv6
draft-ietf-dhc-sedhcpv6-19

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Document Type Active Internet-Draft (dhc WG)
Last updated 2017-01-02
Replaces draft-jiang-dhc-sedhcpv6
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DHC Working Group                                               S. Jiang
Internet-Draft                              Huawei Technologies Co., Ltd
Intended status: Standards Track                                   L. Li
Expires: July 6, 2017                                             Y. Cui
                                                     Tsinghua University
                                                               T. Jinmei
                                                           Infoblox Inc.
                                                                T. Lemon
                                                           Nominum, Inc.
                                                                D. Zhang
                                                         January 2, 2017

                             Secure DHCPv6
                       draft-ietf-dhc-sedhcpv6-19

Abstract

   DHCPv6 includes no deployable security mechanism that can protect
   end-to-end communication between DHCP clients and servers.  This
   document describes a mechanism for using public key cryptography to
   provide such security.  The mechanism provides encryption in all
   cases, and can be used for authentication based on pre-sharing of
   authorized certificates.

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
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   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 6, 2017.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Jiang, et al.             Expires July 6, 2017                  [Page 1]
Internet-Draft                  SeDHCPv6                    January 2017

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   (http://trustee.ietf.org/license-info) in effect on the date of
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Security Issues of DHCPv6 . . . . . . . . . . . . . . . . . .   4
   5.  Secure DHCPv6 Overview  . . . . . . . . . . . . . . . . . . .   5
     5.1.  Solution Overview . . . . . . . . . . . . . . . . . . . .   5
     5.2.  New Components  . . . . . . . . . . . . . . . . . . . . .   6
     5.3.  Support for Algorithm Agility . . . . . . . . . . . . . .   7
     5.4.  Impact on RFC3315 . . . . . . . . . . . . . . . . . . . .   7
     5.5.  Applicability . . . . . . . . . . . . . . . . . . . . . .   8
   6.  DHCPv6 Client Behavior  . . . . . . . . . . . . . . . . . . .   8
   7.  DHCPv6 Server Behavior  . . . . . . . . . . . . . . . . . . .  11
   8.  Relay Agent Behavior  . . . . . . . . . . . . . . . . . . . .  13
   9.  Processing Rules  . . . . . . . . . . . . . . . . . . . . . .  13
     9.1.  Increasing Number Check . . . . . . . . . . . . . . . . .  13
   10. Extensions for Secure DHCPv6  . . . . . . . . . . . . . . . .  14
     10.1.  New DHCPv6 Options . . . . . . . . . . . . . . . . . . .  14
       10.1.1.  Algorithm Option . . . . . . . . . . . . . . . . . .  14
       10.1.2.  Certificate Option . . . . . . . . . . . . . . . . .  17
       10.1.3.  Signature option . . . . . . . . . . . . . . . . . .  18
       10.1.4.  Increasing-number Option . . . . . . . . . . . . . .  19
       10.1.5.  Encryption-Key-Tag Option  . . . . . . . . . . . . .  20
       10.1.6.  Encrypted-message Option . . . . . . . . . . . . . .  20
     10.2.  New DHCPv6 Messages  . . . . . . . . . . . . . . . . . .  21
     10.3.  Status Codes . . . . . . . . . . . . . . . . . . . . . .  22
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  22
   12. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  23
   13. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  24
   14. References  . . . . . . . . . . . . . . . . . . . . . . . . .  25
     14.1.  Normative References . . . . . . . . . . . . . . . . . .  25
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