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Location Hiding: Problem Statement and Requirements
RFC 6444

Internet Engineering Task Force (IETF)                    H. Schulzrinne
Request for Comments: 6444                           Columbia University
Category: Informational                                         L. Liess
ISSN: 2070-1721                                         Deutsche Telekom
                                                           H. Tschofenig
                                                  Nokia Siemens Networks
                                                                B. Stark
                                                                    AT&T
                                                                A. Kuett
                                                                   Skype
                                                            January 2012

          Location Hiding: Problem Statement and Requirements

Abstract

   The emergency services architecture developed in the IETF Emergency
   Context Resolution with Internet Technology (ECRIT) working group
   describes an architecture where location information is provided by
   access networks to endpoints or Voice over IP (VoIP) service
   providers in order to determine the correct dial string and
   information to route the call to a Public Safety Answering Point
   (PSAP).  To determine the PSAP Uniform Resource Identifier (URI), the
   usage of the Location-to-Service Translation (LoST) protocol is
   envisioned.

   This document provides a problem statement and lists requirements for
   situations where the Internet Access Provider (IAP) and/or the
   Internet Service Provider (ISP) are only willing to disclose limited
   or no location information.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   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).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see 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/rfc6444.

Schulzrinne, et al.           Informational                     [Page 1]
RFC 6444              Location Hiding Requirements          January 2012

Copyright Notice

   Copyright (c) 2012 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.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1. Introduction ....................................................3
      1.1. Emergency Services Architecture ............................3
      1.2. Location Hiding ............................................3
      1.3. Location by Reference ......................................4
   2. Terminology .....................................................5
   3. Requirements ....................................................5
   4. Security Considerations .........................................7
   5. Acknowledgments .................................................7
   6. Normative References ............................................7

Schulzrinne, et al.           Informational                     [Page 2]
RFC 6444              Location Hiding Requirements          January 2012

1.  Introduction

[include full document text]