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Traversal Using Relays around NAT (TURN) Resolution Mechanism (RFC5928)

IP.com Disclosure Number: IPCOM000198353D
Original Publication Date: 2010-Aug-01
Included in the Prior Art Database: 2010-Aug-05
Document File: 22 page(s) / 24K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

M. Petit-Huguenin: AUTHOR

Abstract

The Traversal Using Relays around NAT (TURN) specification [RFC5766] defines a process for a TURN client to find TURN servers by using DNS SRV resource records, but this process does not let the TURN server administrators provision the preferred TURN transport protocol between the client and the server and does not allow the TURN client to discover this preference. This document defines an S-NAPTR application [RFC3958] for this purpose. This application defines "RELAY" as an application service tag and "turn.udp", "turn.tcp", and "turn.tls" as application protocol tags.

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Internet Engineering Task Force (IETF)                 M. Petit-Huguenin Request for Comments: 5928                                  Unaffiliated Category: Standards Track                                    August 2010 ISSN: 2070-1721

      Traversal Using Relays around NAT (TURN) Resolution Mechanism

Abstract

   This document defines a resolution mechanism to generate a list of    server transport addresses that can be tried to create a Traversal    Using Relays around NAT (TURN) allocation.

Status of This Memo

   This is an Internet Standards Track document.

   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).  Further information on    Internet Standards is available in 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/rfc5928.

Copyright Notice

   Copyright (c) 2010 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    carefully, as they describe your rights and restrictions with respect    to this document.  Code Components extracted from this document must    include Simplified BSD License text as described in Section 4.e of    the Trust Legal Provisions and are provided without warranty as    described in the Simplified BSD License.

Petit-Huguenin               Standards Track                    [Page 1]
 RFC 5928                     TURN Resolution                 August 2010

 Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  2

   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3

   3.  Resolution Mechanism . . . . . . . . . . . . . . . . . . . . .  3

   4.  Examples . . . . . . . . . . . . . . . . . . . . . . . . . . .  6

     4.1.  Multiple Protocols . . . . . . . . . . . . . . . . . . . .  6

     4.2.  Remote Hosting . . . . . . . . . . . . . . . . . . . . . .  7

     4.3.  Compatibility with TURN  . . . . . . . . . . . . . . . . .  8

   5.  Security Considerations  . . . . . . . . . . . . . . . . . . .  8

   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  9

     6.1.  RELAY Application Service Tag Registration . . . . . . . .  9

     6.2.  turn.udp Application Protocol Tag...