Multiplexing Scheme Updates for Secure Real-time Transport Protocol (SRTP) Extension for Datagram Transport Layer Security (DTLS)
RFC 7983

• Status
• IESG evaluation record
• IESG writeups
• Email expansions
• History

• Versions
• 00
• 01
• 02
• 03
• 04
• 05
• 06
• 07
• 08
• 09
• 10
• 11

Internet Engineering Task Force (IETF)                 M. Petit-Huguenin
Request for Comments: 7983                            Impedance Mismatch
Updates: 5764                                               G. Salgueiro
Category: Standards Track                                  Cisco Systems
ISSN: 2070-1721                                           September 2016

                      Multiplexing Scheme Updates
        for Secure Real-time Transport Protocol (SRTP) Extension
              for Datagram Transport Layer Security (DTLS)

Abstract

   This document defines how Datagram Transport Layer Security (DTLS),
   Real-time Transport Protocol (RTP), RTP Control Protocol (RTCP),
   Session Traversal Utilities for NAT (STUN), Traversal Using Relays
   around NAT (TURN), and ZRTP packets are multiplexed on a single
   receiving socket.  It overrides the guidance from RFC 5764 ("SRTP
   Extension for DTLS"), which suffered from four issues described and
   fixed in this document.

   This document updates RFC 5764.

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 7841.

   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/rfc7983.

Petit-Huguenin & Salgueiro   Standards Track                    [Page 1]
RFC 7983        Multiplexing Scheme Updates for RFC 5764  September 2016

Copyright Notice

   Copyright (c) 2016 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.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Implicit Allocation of Codepoints for New STUN Methods  . . .   4
   4.  Multiplexing of ZRTP  . . . . . . . . . . . . . . . . . . . .   5
   5.  Implicit Allocation of New Codepoints for TLS ContentTypes  .   5
   6.  Multiplexing of TURN Channels . . . . . . . . . . . . . . . .   7
   7.  Updates to RFC 5764 . . . . . . . . . . . . . . . . . . . . .   8
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
     9.1.  STUN Methods  . . . . . . . . . . . . . . . . . . . . . .  10
     9.2.  TLS ContentType . . . . . . . . . . . . . . . . . . . . .  10
     9.3.  Traversal Using Relays around NAT (TURN) Channel Numbers   11
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  11
     10.2.  Informative References . . . . . . . . . . . . . . . . .  12
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  13
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

Petit-Huguenin & Salgueiro   Standards Track                    [Page 2]
RFC 7983        Multiplexing Scheme Updates for RFC 5764  September 2016

1.  Introduction

   Section 5.1.2 of "Datagram Transport Layer Security (DTLS) Extension
   to Establish Keys for the Secure Real-time Transport Protocol (SRTP)"
   [RFC5764] defines a scheme for a Real-time Transport Protocol (RTP)
   [RFC3550] receiver to demultiplex DTLS [RFC6347], Session Traversal
   Utilities for NAT (STUN) [RFC5389], and Secure Real-time Transport
   Protocol (SRTP) / Secure Real-time Transport Control Protocol (SRTCP)