Port Control Protocol (PCP) Third-Party ID Option
RFC 7843

Document Type RFC - Proposed Standard (May 2016; No errata)
Updates RFC 6887
Last updated 2016-05-10
Replaces draft-ripke-pcp-tunnel-id-option
Stream IETF
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Stream WG state Submitted to IESG for Publication
Document shepherd Reinaldo Penno
Shepherd write-up Show (last changed 2015-09-15)
IESG IESG state RFC 7843 (Proposed Standard)
Consensus Boilerplate Yes
Telechat date
Responsible AD Brian Haberman
Send notices to (None)
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                          A. Ripke
Request for Comments: 7843                                     R. Winter
Updates: 6887                                                   T. Dietz
Category: Standards Track                                     J. Quittek
ISSN: 2070-1721                                                      NEC
                                                             R. da Silva
                                                          Telefonica I+D
                                                                May 2016

           Port Control Protocol (PCP) Third-Party ID Option

Abstract

   This document describes a new Port Control Protocol (PCP) option
   called the THIRD_PARTY_ID option.  It is designed to be used together
   with the THIRD_PARTY option specified in RFC 6887.

   The THIRD_PARTY_ID option serves to identify a third party in
   situations where a third party's IP address contained in the
   THIRD_PARTY option does not provide sufficient information to create
   requested mappings in a PCP-controlled device.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7843.

Ripke, et al.                Standards Track                    [Page 1]
RFC 7843                     Third-Party ID                     May 2016

Copyright Notice

   Copyright (c) 2016 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
   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.  Target Scenarios  . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Carrier-Hosted UPnP IGD-PCP IWF . . . . . . . . . . . . .   6
     3.2.  Carrier Web Portal  . . . . . . . . . . . . . . . . . . .   7
   4.  Format  . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
     4.1.  Result Codes  . . . . . . . . . . . . . . . . . . . . . .  10
   5.  Behavior  . . . . . . . . . . . . . . . . . . . . . . . . . .  10
     5.1.  Generating a Request  . . . . . . . . . . . . . . . . . .  10
     5.2.  Processing a Request  . . . . . . . . . . . . . . . . . .  11
     5.3.  Processing a Response . . . . . . . . . . . . . . . . . .  11
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  12
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  13
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  14

Ripke, et al.                Standards Track                    [Page 2]
RFC 7843                     Third-Party ID                     May 2016

1.  Introduction

   The IETF has specified the Port Control Protocol (PCP) [RFC6887] to
   control how packets are translated and/or forwarded by a PCP-
   controlled device such as a Network Address Translator (NAT) or a
   firewall.

   This document focuses on scenarios where the PCP client sends
   requests that concern internal addresses other than the address of
   the PCP client itself.

   There is already an option defined for this purpose in [RFC6887]
   called the THIRD_PARTY option.  The THIRD_PARTY option carries the IP
   address of a host for which a PCP client requests an action at the
   PCP server.  For example, the THIRD_PARTY option can be used if port
   mapping requests for a Carrier-Grade NAT (CGN) are not sent from PCP
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