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PT-EAP: Posture Transport (PT) Protocol For EAP Tunnel Methods
draft-ietf-nea-pt-eap-09

Document type: Active Internet-Draft (nea WG)
Document stream: IETF
Last updated: 2013-04-29 (latest revision 2013-03-28)
Intended RFC status: Proposed Standard
Other versions: plain text, xml, pdf, html

IETF State: WG Document
Consensus: Unknown
Document shepherd: No shepherd assigned

IESG State: RFC Ed Queue
RFC Editor State: AUTH48
Responsible AD: Stephen Farrell
IESG Note: Susan Thomson (sethomso@cisco.com) is the Document Shepherd
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: September 30, 2013                         Symantec Corporation
                                                          March 29, 2013

     PT-EAP: Posture Transport (PT) Protocol For EAP Tunnel Methods
                        draft-ietf-nea-pt-eap-09

Abstract

   This document specifies PT-EAP, an Extensible Authentication Protocol
   (EAP) based Posture Transport (PT) protocol designed to be used only
   inside a TLS protected EAP 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.

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   This Internet-Draft will expire on September 30, 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
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   described in the Simplified BSD License.

Cam-Winget & Sangster  Expires September 30, 2013               [Page 1]
Internet-Draft                 NEA PT-EAP                     March 2013

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Prerequisites . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Message Diagram Conventions . . . . . . . . . . . . . . .   3
     1.3.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
     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 . . . . . . . . . . . . . . . . . . .   5
     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.  Threats and Countermeasures . . . . . . . . . . . . . . .  10
       4.2.1.  Message Confidentiality . . . . . . . . . . . . . . .  11
       4.2.2.  Message Fabrication . . . . . . . . . . . . . . . . .  12
       4.2.3.  Message Modification  . . . . . . . . . . . . . . . .  12
       4.2.4.  Denial of Service . . . . . . . . . . . . . . . . . .  12
       4.2.5.  NEA Asokan Attacks  . . . . . . . . . . . . . . . . .  13
     4.3.  Candidate EAP Tunnel Method Protections . . . . . . . . .  13
     4.4.  Security Claims for PT-EAP as per RFC3748 . . . . . . . .  14
   5.  Requirements for EAP Tunnel Methods . . . . . . . . . . . . .  15
   6.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  16
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  16
     7.1.  Registry for PT-EAP Versions  . . . . . . . . . . . . . .  17
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  17
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  18
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  19
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  19

1.  Introduction

   This document specifies PT-EAP, a Posture Transport (PT) protocol

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