3GPP IMS Option for IKEv2
draft-gundavelli-ipsecme-3gpp-ims-options-00

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IPSECME WG                                                      A. Noble
Internet-Draft                                             S. Gundavelli
Intended status: Standards Track                                   Cisco
Expires: August 22, 2013                                     J. Korhonen
                                                  Nokia Siemens Networks
                                                             F. Baboescu
                                                    Broadcom Corporation
                                                       February 18, 2013

                       3GPP IMS Option for IKEv2
            draft-gundavelli-ipsecme-3gpp-ims-options-00.txt

Abstract

   This document defines two new configuration attributes for Internet
   Key Exchange Protocol version 2 (IKEv2).  These attributes can be
   used for carrying the IPv4 and IPv6 address of the Proxy-Call Control
   and Service function (P-CSCF).  This is one of the few methods that
   an IPsec client can obtain the IP address of the P-CSCF function
   located in the home network.

Status of this Memo

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   This Internet-Draft will expire on August 22, 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

Noble, et al.            Expires August 22, 2013                [Page 1]
Internet-Draft          3GPP IMS Option for IKEv2          February 2013

   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.  Conventions and Terminology . . . . . . . . . . . . . . . . . . 3
     2.1.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . 4
     2.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . 4
   3.  P-CSCF_IP4_ADDRESS Configuration Attribute  . . . . . . . . . . 4
   4.  P-CSCF_IP6_ADDRESS Configuration Attribute  . . . . . . . . . . 5
   5.  Example Scenario  . . . . . . . . . . . . . . . . . . . . . . . 5
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6
   7.  Security Considerations . . . . . . . . . . . . . . . . . . . . 7
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 7
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 7
     9.1.  Normative References  . . . . . . . . . . . . . . . . . . . 7
     9.2.  Informative References  . . . . . . . . . . . . . . . . . . 7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 8

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1.  Introduction

   The 3GPP S2b reference point [TS23402], specified by the 3GPP system
   architecture defines a mechanism for allowing a mobile node attached
   in an untrusted non-3GPP IP Access Network to securely connect to the
   3GPP home network and access IP services.  In this scenario, the
   mobile node establishes an IPsec tunnel to the security gateway
   called ePDG and which in turn establishes a PMIPv6/GTP tunnel to the
   PDN gateway where the mobile node's session is anchored.  The below
   figure shows the interworking option for Untrusted Non-3GPP access.

                                 +------------+
                                 |    ePDG    |
                                 | +--------+ |
   +------+        _----_        | | IPsec  | |      _----_      +-----+
   |  MN  |      _(      )_      | | Module | |    _(      )_    | LMA |
   |      |<====( Internet )=====| +--------+ |===( Operator )===|(PGW)|
   +------+      (_      _)      |      :     |    (_Network_)   +-----+
                   '----'        | +--------+ |      '----'
                  IPsec Tunnel   | | PMIPv6 | |  PMIPv6/GTP Tunnel
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