PT-EAP: Posture Transport (PT) Protocol For EAP Tunnel Methods
draft-ietf-nea-pt-eap-01

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Last updated 2012-03-09
Replaces draft-hanna-nea-pt-eap
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NEA                                                   N. Cam-Winget, Ed.
Internet-Draft                                             Cisco Systems
Intended status: Informational                             Sangster, Ed.
Expires: September 11, 2012                         Symantec Corporation
                                                          March 10, 2012

     PT-EAP: Posture Transport (PT) Protocol For EAP Tunnel Methods
                        draft-ietf-nea-pt-eap-01

Abstract

   This document specifies PT-EAP, an EAP based Posture Transport (PT)
   protocol designed to be used only inside TLS protected tunnel method.
   As such, the document also describes the intended applicability of
   PT-EAP as well as the evaluation against the requirements defined in
   the NEA Requirements and PB-TNC specifications.

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 11, 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
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   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as

Cam-Winget & Sangster  Expires September 11, 2012               [Page 1]
Internet-Draft                 NEA PT-EAP                     March 2012

   described in the Simplified BSD License.

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 . . . . . . . . . . . 11
       4.2.1.  Message Theft  . . . . . . . . . . . . . . . . . . . . 11
       4.2.2.  Message Fabrication  . . . . . . . . . . . . . . . . . 12
       4.2.3.  Message Modification . . . . . . . . . . . . . . . . . 13
       4.2.4.  Denial of Service  . . . . . . . . . . . . . . . . . . 13
       4.2.5.  NEA Asokan Attacks . . . . . . . . . . . . . . . . . . 13
     4.3.  Requirements for EAP Tunnel Methods  . . . . . . . . . . . 14
     4.4.  Candidate EAP Tunnel Method Protections  . . . . . . . . . 15
     4.5.  Security Claims for PT-EAP as per RFC3748  . . . . . . . . 16
   5.  Privacy Considerations . . . . . . . . . . . . . . . . . . . . 16
   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 17
     6.1.  Registry for PT-EAP Versions . . . . . . . . . . . . . . . 17
   7.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 17
   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 18
     8.1.  Normative References . . . . . . . . . . . . . . . . . . . 18
     8.2.  Informative References . . . . . . . . . . . . . . . . . . 19
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 20
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