3GPP IMS Option for IKEv2
draft-gundavelli-ipsecme-3gpp-ims-options-03

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Last updated 2014-09-11
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IPSECME WG                                                 A. Dodd-Noble
Internet-Draft                                             S. Gundavelli
Intended status: Informational                                     Cisco
Expires: March 15, 2015                                      J. Korhonen
                                                             F. Baboescu
                                                    Broadcom Corporation
                                                                 B. Weis
                                                                   Cisco
                                                      September 11, 2014

                       3GPP IMS Option for IKEv2
            draft-gundavelli-ipsecme-3gpp-ims-options-03.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 address and IPv6 address of the Proxy-Call
   Session Control Function (P-CSCF).  When an IPSec gateway delivers
   these attributes to an IPsec client, the IPsec client can obtain the
   IPv4 and/or IPv6 address of the P-CSCF server located in the 3GPP
   network.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on March 15, 2015.

Copyright Notice

   Copyright (c) 2014 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

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   (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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  Conventions and Terminology . . . . . . . . . . . . . . . . . . 4
     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  . . . . . . . . . . . . . . . . . . . . . . . 6
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 7
   7.  Security Considerations . . . . . . . . . . . . . . . . . . . . 8
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 8
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 8
     9.1.  Normative References  . . . . . . . . . . . . . . . . . . . 8
     9.2.  Informative References  . . . . . . . . . . . . . . . . . . 8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 9

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1.  Introduction

   The Third Generation Partnership Project (3GPP) S2b reference point
   [TS23402], specified by the 3GPP system architecture defines a
   mechanism for allowing a mobile node (MN) attached in an untrusted
   non-3GPP IP Access Network to securely connect to a 3GPP network and
   access IP services.  In this scenario, the mobile node establishes an
   IPsec ESP tunnel [RFC4303] to the security gateway called evolved
   packet data gateway (ePDG) and which in turn establishes a Proxy
   Mobile IPv6 (PMIPv6) [RFC5213] or GPRS Tunneling Protocol (GTP)
   [TS23402] tunnel to the packet data gateway (PGW) [TS23402] where the
   mobile node's session is anchored.

   The below figure shows the interworking option for non-3GPP access
   over an untrusted-access network.  The mobile access gateway (MAG)
   and the local mobility anchor (LMA) functions are defined in
   [RFC5213].  The ePDG and PGW functions are defined in [TS23402].
   IPSec ESP tunnel is between the MN and the ePDG and PMIP or GTP
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