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MMUSIC                                                        M. Thomson
Internet-Draft                                                 Microsoft
Intended status: Standards Track                         October 8, 2013
Expires: April 11, 2014


  Using Interactive Connectivity Establishment (ICE) in Web Real-Time
                        Communications (WebRTC)
                   draft-thomson-mmusic-ice-webrtc-00

Abstract

   Interactive Connectivity Establishment (ICE) has been selected as the
   basis for establishing peer-to-peer UDP flows between Web Real-Time
   Communication (WebRTC) clients.  The risks and complications arising
   from this choice are discussed.

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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   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 11, 2014.

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
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.



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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
     1.1.  Conventions and Terminology . . . . . . . . . . . . . . . . 3
   2.  ICE in a Web Browser  . . . . . . . . . . . . . . . . . . . . . 3
   3.  Modified ICE Algorithm  . . . . . . . . . . . . . . . . . . . . 3
   4.  Security Considerations . . . . . . . . . . . . . . . . . . . . 3
   5.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 3
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 4
     6.1.  Normative References  . . . . . . . . . . . . . . . . . . . 4
     6.2.  Informative References  . . . . . . . . . . . . . . . . . . 4
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . . . 5







































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1.  Introduction

   ICE [RFC5245] describes a process whereby peers establish a bi-
   directional UDP flow.  This process has been adopted for use in Web
   Real-Time Communications (WebRTC) for establishing flows to and from
   web browsers ([I-D.ietf-rtcweb-overview]).

   Properties of ICE are also critical to the security of WebRTC (see
   Section 4.2.1 of [I-D.ietf-rtcweb-security]).

   The design of RFC 5245 does not fully consider the threat models
   enabled by the web environment.  TBC...

1.1.  Conventions and Terminology

   In cases where normative language needs to be emphasized, this
   document falls back on established shorthands for expressing
   interoperability requirements on implementations: the capitalized
   words "MUST", "MUST NOT", "SHOULD" and "MAY".  The meaning of these
   is described in [RFC2119].


2.  ICE in a Web Browser

   Details coming...


3.  Modified ICE Algorithm

   Details coming...


4.  Security Considerations

   This entire document is about security.


5.  Acknowledgements

   The bulk of the algorithm described in this document came out of a
   discussion with Emil Ivov and Pal-Erik Martinsen.  Eric Rescorla and
   Bernard Aboba provided some feedback on *mumble*.


6.  References






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6.1.  Normative References

   [I-D.ivov-mmusic-trickle-ice]
              Ivov, E., Rescorla, E., and J. Uberti, "Trickle ICE:
              Incremental Provisioning of Candidates for the Interactive
              Connectivity Establishment (ICE) Protocol",
              draft-ivov-mmusic-trickle-ice-01 (work in progress),
              March 2013.

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

   [RFC5245]  Rosenberg, J., "Interactive Connectivity Establishment
              (ICE): A Protocol for Network Address Translator (NAT)
              Traversal for Offer/Answer Protocols", RFC 5245,
              April 2010.

6.2.  Informative References

   [I-D.ietf-rtcweb-overview]
              Alvestrand, H., "Overview: Real Time Protocols for Brower-
              based Applications", draft-ietf-rtcweb-overview-08 (work
              in progress), September 2013.

   [I-D.ietf-rtcweb-security]
              Rescorla, E., "Security Considerations for WebRTC",
              draft-ietf-rtcweb-security-05 (work in progress),
              July 2013.

   [I-D.ietf-rtcweb-security-arch]
              Rescorla, E., "WebRTC Security Architecture",
              draft-ietf-rtcweb-security-arch-07 (work in progress),
              July 2013.

   [I-D.martinsen-mmusic-malice]
              Penno, R., Martinsen, P., Wing, D., and A. Zamfir, "Meta-
              data Attribute signaLling with ICE",
              draft-martinsen-mmusic-malice-00 (work in progress),
              July 2013.

   [I-D.muthu-behave-consent-freshness]
              Perumal, M., Wing, D., R, R., and T. Reddy, "STUN Usage
              for Consent Freshness",
              draft-muthu-behave-consent-freshness-04 (work in
              progress), July 2013.

   [RFC5389]  Rosenberg, J., Mahy, R., Matthews, P., and D. Wing,
              "Session Traversal Utilities for NAT (STUN)", RFC 5389,



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              October 2008.

   [RFC5766]  Mahy, R., Matthews, P., and J. Rosenberg, "Traversal Using
              Relays around NAT (TURN): Relay Extensions to Session
              Traversal Utilities for NAT (STUN)", RFC 5766, April 2010.

   [RFC6454]  Barth, A., "The Web Origin Concept", RFC 6454,
              December 2011.


Author's Address

   Martin Thomson
   Microsoft
   3210 Porter Drive
   Palo Alto, CA  94304
   US

   Email: martin.thomson@skype.net
































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