HOST_ID: Use Cases
draft-boucadair-intarea-host-identifier-scenarios-00

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INTAREA Working Group                                       M. Boucadair
Internet-Draft                                                  D. Binet
Intended status: Informational                                  S. Durel
Expires: April 14, 2013                                   France Telecom
                                                        October 11, 2012

                           HOST_ID: Use Cases
          draft-boucadair-intarea-host-identifier-scenarios-00

Abstract

   This document describes a set of scenarios in which host
   identification is required.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on April 14, 2013.

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   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
   3.  Use Case 1: CGN . . . . . . . . . . . . . . . . . . . . . . . . 3
   4.  Use Case 2: A+P . . . . . . . . . . . . . . . . . . . . . . . . 4
   5.  Use Case 3: Application Proxies . . . . . . . . . . . . . . . . 5
   6.  Use Case 4: Open Wi-Fi or Provider Wi-Fi  . . . . . . . . . . . 5
   7.  Use Case 5: Policy and Charging Control Architecture  . . . . . 7
   8.  Use Case 6: Cellular Networks . . . . . . . . . . . . . . . . . 8
   9.  Security Considerations . . . . . . . . . . . . . . . . . . . . 8
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 8
   11. Informative References  . . . . . . . . . . . . . . . . . . . . 8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 9

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1.  Introduction

   The ultimate goal of this document is to enumerate scenarios which
   encounter the issue of uniquely identifying a host among those
   sharing the same IP address.  Examples of encountered issues are:

   o  Blacklist a misbehaving host without impacting all hosts sharing
      the same IP address.

   o  If a remote server enforces a policy to limit access to the
      service (based on some counters), the policy will have impact on
      all hosts sharing the same IP address.

   o  If access to a service has failed (e.g., wrong login/passwd), all
      hosts sharing the same IP address may not be able to access that
      service.

   It is out of scope of this document to list all the encountered
   issues as this is already covered in [RFC6269].

   The generic concept of host identifier, denoted as HOST_ID, is
   defined in [I-D.ietf-intarea-nat-reveal-analysis].

2.  Scope

   It is out of scope of this document to argue in favor or against the
   use cases listed in the following sub-sections.  The goal is to
   identify scenarios the authors are aware of and which share the same
   issue of host identification.

   This document does not include any solution-specific discussion.
   This document can be used as a tool to design solution(s) mitigating
   the encountered issues.  Having a generic solution which would solve
   the issues encountered in these use cases is preferred over designing
   a solution for each use case.  Describing the use case allows to
   identify what is common between the use cases and then would help
   during the solution design phase.
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