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Port Control Protocol (PCP) Authentication Mechanism
draft-ietf-pcp-authentication-03

Document type: Active Internet-Draft (pcp WG)
Document stream: IETF
Last updated: 2014-02-08
Intended RFC status: Unknown
Other versions: plain text, xml, pdf, html

IETF State: WG Document
Consensus: Unknown
Document shepherd: No shepherd assigned

IESG State: I-D Exists
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Network Working Group                                       M. Wasserman
Internet-Draft                                                S. Hartman
Intended status: Experimental                          Painless Security
Expires: August 11, 2014                                        D. Zhang
                                                                  Huawei
                                                        February 7, 2014

          Port Control Protocol (PCP) Authentication Mechanism
                    draft-ietf-pcp-authentication-03

Abstract

   An IPv4 or IPv6 host can use the Port Control Protocol (PCP) to
   flexibly manage the IP address and port mapping information on
   Network Address Translators (NATs) or firewalls, to facilitate
   communications with remote hosts.  However, the un-controlled
   generation or deletion of IP address mappings on such network devices
   may cause security risks and should be avoided.  In some cases the
   client may need to prove that it is authorized to modify, create or
   delete PCP mappings.  This document proposes an in-band
   authentication mechanism for PCP that can be used in those cases.
   The Extensible Authentication Protocol (EAP) is used to perform
   authentication between PCP devices.

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 August 11, 2014.

Copyright Notice

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

Wasserman, et al.        Expires August 11, 2014                [Page 1]
Internet-Draft             PCP Authentication              February 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  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Protocol Details  . . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  Session Initiation  . . . . . . . . . . . . . . . . . . .   5
     3.2.  Session Termination . . . . . . . . . . . . . . . . . . .   8
     3.3.  Session Re-Authentication . . . . . . . . . . . . . . . .   8
   4.  PA Security Association . . . . . . . . . . . . . . . . . . .   9
   5.  Result Code . . . . . . . . . . . . . . . . . . . . . . . . .  10
   6.  Packet Format . . . . . . . . . . . . . . . . . . . . . . . .  10
     6.1.  Packet Format of PCP Auth Messages  . . . . . . . . . . .  10
     6.2.  Authentication OpCode . . . . . . . . . . . . . . . . . .  11
     6.3.  Nonce Option  . . . . . . . . . . . . . . . . . . . . . .  12
     6.4.  Authentication Tag Option for Common PCP  . . . . . . . .  12
     6.5.  Authentication Tag Option for PCP Auth Messages . . . . .  13
     6.6.  EAP Payload Option  . . . . . . . . . . . . . . . . . . .  14
     6.7.  PRF Option  . . . . . . . . . . . . . . . . . . . . . . .  15
     6.8.  MAC Algorithm Option  . . . . . . . . . . . . . . . . . .  15
     6.9.  Session Lifetime Option . . . . . . . . . . . . . . . . .  15
     6.10. Received Packet Option  . . . . . . . . . . . . . . . . .  16
   7.  Processing Rules  . . . . . . . . . . . . . . . . . . . . . .  16
     7.1.  Authentication Data Generation  . . . . . . . . . . . . .  16
     7.2.  Authentication Data Validation  . . . . . . . . . . . . .  17
     7.3.  Retransmission Policies for PCP Auth Messages . . . . . .  18
     7.4.  Sequence Numbers for PCP Auth Messages  . . . . . . . . .  18
     7.5.  Sequence Numbers for Common PCP Messages  . . . . . . . .  19
     7.6.  MTU Considerations  . . . . . . . . . . . . . . . . . . .  20
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  20
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  20

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