[Docs] [txt|pdf] [Tracker] [WG] [Email] [Diff1] [Diff2] [Nits]

Versions: 00 01 02 03 04 05 RFC 5192

DHC Working Group                                              L. Morand
Internet-Draft                                        France Telecom R&D
Intended status: Standards Track                                S. Kumar
Expires: March 15, 2007                Samsung India Software Operations
                                                                A. Yegin
                                           Samsung Advanced Institute of
                                                              Technology
                                                          S. Madanapalli
                                       Samsung India Software Operations
                                                      September 11, 2006


              DHCP options for PANA Authentication Agents
                      draft-ietf-dhc-paa-option-04

Status of this Memo

   By submitting this Internet-Draft, each author represents that any
   applicable patent or other IPR claims of which he or she is aware
   have been or will be disclosed, and any of which he or she becomes
   aware will be disclosed, in accordance with Section 6 of BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/ietf/1id-abstracts.txt.

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html.

   This Internet-Draft will expire on March 15, 2007.

Copyright Notice

   Copyright (C) The Internet Society (2006).

Abstract

   This document defines new DHCPv4 and DHCPv6 options that contain a
   list of IP addresses to locate one or more of PANA Authentication



Morand, et al.           Expires March 15, 2007                 [Page 1]

Internet-Draft              PAA DHCP options              September 2006


   Agents (PAA).  This is one of the many methods that a PANA Client
   (PaC) can use to locate PANA Authentication Agents (PAA).


Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  Specification of Requirements . . . . . . . . . . . . . . . . . 3
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . 3
   4.  PANA Authentication Agent DHCPv4 Option . . . . . . . . . . . . 4
   5.  PANA Authentication Agent DHCPv6 Option . . . . . . . . . . . . 4
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 5
   7.  Security Considerations . . . . . . . . . . . . . . . . . . . . 6
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 6
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 6
     9.1.  Normative References  . . . . . . . . . . . . . . . . . . . 6
     9.2.  Informative References  . . . . . . . . . . . . . . . . . . 6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 6
   Intellectual Property and Copyright Statements  . . . . . . . . . . 8
































Morand, et al.           Expires March 15, 2007                 [Page 2]

Internet-Draft              PAA DHCP options              September 2006


1.  Introduction

   The Protocol for carrying Authentication for Network Access (PANA)
   [I-D.ietf-pana-pana] defines a new Extensible Authentication Protocol
   (EAP) [RFC3748] lower layer that uses IP between the protocol end-
   points.

   The PANA protocol is run between a PANA Client (PaC) and a PANA
   Authentication Agent (PAA) in order to perform authentication and
   authorization for the network access service.

   This document specifies DHCPv4 [RFC2131] and DHCPv6 [RFC3315] options
   that allow PANA client (PaC) to discover PANA Authentication Agents
   (PAA).  This is one of the many methods for locating PAAs.


2.  Specification of Requirements

   In this document, several words are used to signify the requirements
   of the specification.  These words are often capitalized.  The key
   words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD",
   "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document
   are to be interpreted as described in [RFC2119].


3.  Terminology

   This document uses the DHCP terminology defined in [RFC2131],
   [RFC2132] and [RFC3315].

   This document uses the PANA terminology defined in
   [I-D.ietf-pana-pana].  In particular, the following terms are
   defined:

      PANA Client (PaC):

         The client side of the protocol that resides in the access
         device (e.g., laptop, PDA, etc.).  It is responsible for
         providing the credentials in order to prove its identity
         (authentication) for network access authorization.

      PANA Authentication Agent (PAA):

         The protocol entity in the access network whose responsibility
         is to verify the credentials provided by a PANA client (PaC)
         and authorize network access to the device associated with the
         client and identified by a Device Identifier (DI).




Morand, et al.           Expires March 15, 2007                 [Page 3]

Internet-Draft              PAA DHCP options              September 2006


4.  PANA Authentication Agent DHCPv4 Option

   This section defines a DHCPv4 option that carries a list of 32-bit
   (binary) IPv4 addresses indicating one or more PANA Authentication
   Agents (PAA) available to the PANA client.

   The DHCPv4 option for PANA Authentication Agent has the format shown
   in Fig. 1.

      0                   1
      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |  option-code  | option-length |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                               |
      +      PAA IPv4 Address         +
      |                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |             ...               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
        Figure 1: PAA DHCPv4 option

   option-code:        OPTION_PANA_AGENT (TBD)

   option-length:      Length of the 'options' field in octets;
                       MUST be a multiple of four (4)

   PAA IPv4 Address:   IPv4 address of a PAA for the client to use;
                       The PAAs are listed in the order of preference
                       for use by the client.

   A DHCPv4 client requests the PAA DHCPv4 Option in a Parameter Request
   List as described in [RFC2131] and [RFC2132].

   The DHCPv4 client MUST try the records in the order listed in the PAA
   DHCPv4 option.


5.  PANA Authentication Agent DHCPv6 Option

   This section defines a DHCPv6 option that carries a list of 128-bit
   (binary) IPv6 addresses indicating one or more PANA Authentication
   Agents (PAA) available to the PANA client.

   The DHCPv6 option for PANA Authentication Agent has the format shown
   in Fig. 2.





Morand, et al.           Expires March 15, 2007                 [Page 4]

Internet-Draft              PAA DHCP options              September 2006


      0                   1                   2                   3
      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |       option-code             |       option-length           |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                                                               |
      +                                                               +
      |                                                               |
      +                         PAA IPv6 Address                      +
      |                                                               |
      +                                                               +
      |                                                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                          ....                                 |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
                   Figure 2: PAA DHCPv6 option

   option-code:        OPTION_PANA_AGENT (TBD)

   option-length:      Length of the 'options' field in octets;
                       MUST be a multiple of sixteen (16)

   PAA IPv6 Address:   IPv6 address of a PAA for the client to use;
                       The PAAs are listed in the order of preference
                       for use by the client.

   A DHCPv6 client requests the PAA DHCPv6 option in an Options Request
   Option (ORO) as described in the DHCPv6 specification [RFC3315].

   The DHCPv6 client MUST try the records in the order listed in the PAA
   DHCPv6 option.


6.  IANA Considerations

   The following DHCPv4 option code for PANA Authentication Agent option
   MUST be assigned by IANA:
          Option  Name           Value       Described in
          -----------------------------------------------
          OPTION_PANA_AGENT       TBD         Section 4


   The following DHCPv6 option code for PANA Authentication Agent
   options MUST be assigned by IANA:
          Option  Name            Value       Described in
          ------------------------------------------------
          OPTION_PAA_AGENT        TBD         Section 5




Morand, et al.           Expires March 15, 2007                 [Page 5]

Internet-Draft              PAA DHCP options              September 2006


7.  Security Considerations

   The security considerations in [RFC2131], [RFC2132] and [RFC3315]
   apply.  If an adversary manages to modify the response from a DHCP
   server or insert its own response, a PANA Client could be led to
   contact a rogue PANA Agent, possibly one that then intercepts call
   requests or denies service.


8.  Acknowledgements

   Thanks to Ralph Droms, Stig Venaas, Ted Lemon, Andre Kostur, Bernie
   Volz, Soohong Daniel Park and Yoshihiro Ohba for their valuable
   comments.


9.  References

9.1.  Normative References

   [I-D.ietf-pana-pana]
              Forsberg, D., "Protocol for Carrying Authentication for
              Network Access (PANA)", draft-ietf-pana-pana-12 (work in
              progress), August 2006.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC2131]  Droms, R., "Dynamic Host Configuration Protocol",
              RFC 2131, March 1997.

   [RFC2132]  Alexander, S. and R. Droms, "DHCP Options and BOOTP Vendor
              Extensions", RFC 2132, March 1997.

   [RFC3315]  Droms, R., Bound, J., Volz, B., Lemon, T., Perkins, C.,
              and M. Carney, "Dynamic Host Configuration Protocol for
              IPv6 (DHCPv6)", RFC 3315, July 2003.

9.2.  Informative References

   [RFC3748]  Aboba, B., Blunk, L., Vollbrecht, J., Carlson, J., and H.
              Levkowetz, "Extensible Authentication Protocol (EAP)",
              RFC 3748, June 2004.








Morand, et al.           Expires March 15, 2007                 [Page 6]

Internet-Draft              PAA DHCP options              September 2006


Authors' Addresses

   Lionel Morand
   France Telecom R&D
   38-40 rue du general Leclerc
   92794 Issy-Les-Moulineaux Cedex 9
   France

   Phone: +33 1 45296257
   Email: lionel.morand@orange-ft.com


   Suraj Kumar
   Samsung India Software Operations
   No. 66/1, BAGMANE TECH PARK, C V RAMAN NAGAR
   Bangalore
   India

   Phone: +91 80 41819999
   Email: suraj.kumar@samsung.com


   Alper E. Yegin
   Samsung Advanced Institute of Technology

   Email: alper01.yegin@partner.samsung.com


   Syam Madanapalli
   Samsung India Software Operations
   No. 66/1, BAGMANE TECH PARK, C V RAMAN NAGAR
   Bangalore
   India

   Phone: +91 80 41819999
   Email: syam@samsung.com















Morand, et al.           Expires March 15, 2007                 [Page 7]

Internet-Draft              PAA DHCP options              September 2006


Full Copyright Statement

   Copyright (C) The Internet Society (2006).

   This document is subject to the rights, licenses and restrictions
   contained in BCP 78, and except as set forth therein, the authors
   retain all their rights.

   This document and the information contained herein are provided on an
   "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
   OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
   ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
   INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
   INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
   WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.


Intellectual Property

   The IETF takes no position regarding the validity or scope of any
   Intellectual Property Rights or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
   this document or the extent to which any license under such rights
   might or might not be available; nor does it represent that it has
   made any independent effort to identify any such rights.  Information
   on the procedures with respect to rights in RFC documents can be
   found in BCP 78 and BCP 79.

   Copies of IPR disclosures made to the IETF Secretariat and any
   assurances of licenses to be made available, or the result of an
   attempt made to obtain a general license or permission for the use of
   such proprietary rights by implementers or users of this
   specification can be obtained from the IETF on-line IPR repository at
   http://www.ietf.org/ipr.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights that may cover technology that may be required to implement
   this standard.  Please address the information to the IETF at
   ietf-ipr@ietf.org.


Acknowledgment

   Funding for the RFC Editor function is provided by the IETF
   Administrative Support Activity (IASA).





Morand, et al.           Expires March 15, 2007                 [Page 8]


Html markup produced by rfcmarkup 1.109, available from https://tools.ietf.org/tools/rfcmarkup/