Datagram Transport Layer Security (DTLS) as Transport for Session Traversal Utilities for NAT (STUN)
draft-ietf-tram-stun-dtls-01

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TRAM                                                   M. Petit-Huguenin
Internet-Draft                                       Jive Communications
Intended status: Standards Track                            G. Salgueiro
Expires: September 25, 2014                                Cisco Systems
                                                          March 24, 2014

   Datagram Transport Layer Security (DTLS) as Transport for Session
                   Traversal Utilities for NAT (STUN)
                      draft-ietf-tram-stun-dtls-01

Abstract

   This document specifies the usage of Datagram Transport Layer
   Security (DTLS) as a transport protocol for Session Traversal
   Utilities for NAT (STUN).  It provides guidances on when and how to
   use DTLS with the currently standardized STUN Usages.  It also
   specifies modifications to the STUN URIs and TURN URIs and to the
   TURN resolution mechanism to facilitate the resolution of STUN URIs
   and TURN URIs into the IP address and port of STUN and TURN servers
   supporting DTLS as a transport protocol.

Status of This Memo

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   This Internet-Draft will expire on September 25, 2014.

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   Copyright (c) 2014 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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   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents

Petit-Huguenin & SalgueExpires September 25, 2014               [Page 1]
Internet-Draft               TURN over DTLS                   March 2014

   carefully, as they describe your rights and restrictions with respect
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  DTLS as Transport for STUN  . . . . . . . . . . . . . . . . .   3
   4.  STUN Usages . . . . . . . . . . . . . . . . . . . . . . . . .   4
     4.1.  NAT Discovery Usage . . . . . . . . . . . . . . . . . . .   4
       4.1.1.  DTLS Support in STUN URIs . . . . . . . . . . . . . .   4
     4.2.  Connectivity Check Usage  . . . . . . . . . . . . . . . .   5
     4.3.  Media Keep-Alive Usage  . . . . . . . . . . . . . . . . .   5
     4.4.  SIP Keep-Alive Usage  . . . . . . . . . . . . . . . . . .   5
     4.5.  NAT Behavior Discovery Usage  . . . . . . . . . . . . . .   5
     4.6.  TURN Usage  . . . . . . . . . . . . . . . . . . . . . . .   6
       4.6.1.  DTLS Support in TURN URIs . . . . . . . . . . . . . .   6
       4.6.2.  Resolution Mechanism for TURN over DTLS . . . . . . .   6
   5.  Implementation Status . . . . . . . . . . . . . . . . . . . .   7
     5.1.  turnuri . . . . . . . . . . . . . . . . . . . . . . . . .   8
     5.2.  rfc5766-turn-server . . . . . . . . . . . . . . . . . . .   8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     7.1.  S-NAPTR application protocol tag  . . . . . . . . . . . .   9
     7.2.  Service Name and Transport Protocol Port Number . . . . .  10
       7.2.1.  The stuns Service Name  . . . . . . . . . . . . . . .  10
       7.2.2.  The turns Service Name  . . . . . . . . . . . . . . .  10
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  11
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  12
   Appendix A.  Examples . . . . . . . . . . . . . . . . . . . . . .  12
   Appendix B.  Release notes  . . . . . . . . . . . . . . . . . . .  13
     B.1.  Modifications between ietf-tram-stun-dtls-00 and ietf-
           tram-stun-dtls-01 . . . . . . . . . . . . . . . . . . . .  13
     B.2.  Modifications between petithuguenin-tram-stun-dtls-00 and
           ietf-tram-stun-dtls-00  . . . . . . . . . . . . . . . . .  14
     B.3.  Modifications between petithuguenin-tram-turn-dtls-00 and
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