Requirements for a Tunnel-Based Extensible Authentication Protocol (EAP) Method
RFC 6678

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Internet Engineering Task Force (IETF)                         K. Hoeper
Request for Comments: 6678                      Motorola Solutions, Inc.
Category: Informational                                         S. Hanna
ISSN: 2070-1721                                         Juniper Networks
                                                                 H. Zhou
                                                         J. Salowey, Ed.
                                                     Cisco Systems, Inc.
                                                               July 2012

                           Requirements for a
      Tunnel-Based Extensible Authentication Protocol (EAP) Method

Abstract

   This memo defines the requirements for a tunnel-based Extensible
   Authentication Protocol (EAP) Method.  This tunnel method will use
   Transport Layer Security (TLS) to establish a secure tunnel.  The
   tunnel will provide support for password authentication, EAP
   authentication, and the transport of additional data for other
   purposes.

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/rfc6678.

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   carefully, as they describe your rights and restrictions with respect

Hoeper, et al.                Informational                     [Page 1]
RFC 6678             EAP Tunnel Method Requirements            July 2012

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   than English.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Conventions Used in This Document  . . . . . . . . . . . . . .  4
   3.  Use Cases  . . . . . . . . . . . . . . . . . . . . . . . . . .  5
     3.1.  Password Authentication  . . . . . . . . . . . . . . . . .  5
     3.2.  Protection of Weak EAP Methods . . . . . . . . . . . . . .  5
     3.3.  Chained EAP Methods  . . . . . . . . . . . . . . . . . . .  6
     3.4.  Identity Protection  . . . . . . . . . . . . . . . . . . .  6
     3.5.  Anonymous Service Access . . . . . . . . . . . . . . . . .  7
     3.6.  Network Endpoint Assessment  . . . . . . . . . . . . . . .  7
     3.7.  Client Authentication during Tunnel Establishment  . . . .  7
     3.8.  Extensibility  . . . . . . . . . . . . . . . . . . . . . .  8
     3.9.  Certificate-Less Authentication and Generic EAP Method
           Extension  . . . . . . . . . . . . . . . . . . . . . . . .  8
   4.  Requirements . . . . . . . . . . . . . . . . . . . . . . . . .  9
     4.1.  General Requirements . . . . . . . . . . . . . . . . . . .  9
       4.1.1.  RFC Compliance . . . . . . . . . . . . . . . . . . . .  9
     4.2.  Tunnel Requirements  . . . . . . . . . . . . . . . . . . . 10
       4.2.1.  TLS Requirements . . . . . . . . . . . . . . . . . . . 10
         4.2.1.1.  Cipher Suites  . . . . . . . . . . . . . . . . . . 10
           4.2.1.1.1.  Cipher Suite Negotiation . . . . . . . . . . . 10
           4.2.1.1.2.  Tunnel Data Protection Algorithms  . . . . . . 10
           4.2.1.1.3.  Tunnel Authentication and Key Establishment  . 11
         4.2.1.2.  Tunnel Replay Protection . . . . . . . . . . . . . 11