PT-EAP: Posture Transport (PT) Protocol For EAP Tunnel Methods
draft-ietf-nea-pt-eap-05

The information below is for an old version of the document
Document Type Active Internet-Draft (nea WG)
Last updated 2012-11-19 (latest revision 2012-11-12)
Replaces draft-hanna-nea-pt-eap
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Send notices to nea-chairs@tools.ietf.org, draft-ietf-nea-pt-eap@tools.ietf.org
NEA                                                        N. Cam-Winget
Internet-Draft                                             Cisco Systems
Intended status: Standards Track                             P. Sangster
Expires: May 17, 2013                               Symantec Corporation
                                                       November 13, 2012

     PT-EAP: Posture Transport (PT) Protocol For EAP Tunnel Methods
                        draft-ietf-nea-pt-eap-05

Abstract

   This document specifies PT-EAP, an EAP based Posture Transport (PT)
   protocol designed to be used only inside a TLS protected tunnel
   method.  The document also describes the intended applicability of
   PT-EAP.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on May 17, 2013.

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
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   publication of this document.  Please review these documents
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Cam-Winget & Sangster     Expires May 17, 2013                  [Page 1]
Internet-Draft                 NEA PT-EAP                  November 2012

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Prerequisites  . . . . . . . . . . . . . . . . . . . . . .  3
     1.2.  Message Diagram Conventions  . . . . . . . . . . . . . . .  3
     1.3.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  4
     1.4.  Conventions used in this document  . . . . . . . . . . . .  4
     1.5.  Compatibility with other Specifications  . . . . . . . . .  4
   2.  Use of PT-EAP  . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  Definition of PT-EAP . . . . . . . . . . . . . . . . . . . . .  4
     3.1.  Protocol Overview  . . . . . . . . . . . . . . . . . . . .  5
     3.2.  Version Negotiation  . . . . . . . . . . . . . . . . . . .  6
     3.3.  PT-EAP Message Format  . . . . . . . . . . . . . . . . . .  6
     3.4.  Preventing MITM Attacks with Channel Bindings  . . . . . .  8
   4.  Security Considerations  . . . . . . . . . . . . . . . . . . .  9
     4.1.  Trust Relationships  . . . . . . . . . . . . . . . . . . .  9
       4.1.1.  Posture Transport Client . . . . . . . . . . . . . . .  9
       4.1.2.  Posture Transport Server . . . . . . . . . . . . . . . 10
     4.2.  Security Threats and Countermeasures . . . . . . . . . . . 12
       4.2.1.  Message Theft  . . . . . . . . . . . . . . . . . . . . 12
       4.2.2.  Message Fabrication  . . . . . . . . . . . . . . . . . 13
       4.2.3.  Message Modification . . . . . . . . . . . . . . . . . 13
       4.2.4.  Denial of Service  . . . . . . . . . . . . . . . . . . 13
       4.2.5.  NEA Asokan Attacks . . . . . . . . . . . . . . . . . . 14
     4.3.  Candidate EAP Tunnel Method Protections  . . . . . . . . . 14
     4.4.  Security Claims for PT-EAP as per RFC3748  . . . . . . . . 15
   5.  Requirements for EAP Tunnel Methods  . . . . . . . . . . . . . 15
   6.  Privacy Considerations . . . . . . . . . . . . . . . . . . . . 17
   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 17
     7.1.  Registry for PT-EAP Versions . . . . . . . . . . . . . . . 18
   8.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 18
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 19
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 19
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 19
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 20

Cam-Winget & Sangster     Expires May 17, 2013                  [Page 2]
Internet-Draft                 NEA PT-EAP                  November 2012
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