Datagram Transport Layer Security (DTLS) Encapsulation of SCTP Packets
RFC 8261
Document | Type | RFC - Proposed Standard (November 2017; No errata) | |
---|---|---|---|
Authors | Michael Tüxen , Randall Stewart , Randell Jesup , Salvatore Loreto | ||
Last updated | 2017-11-15 | ||
Replaces | draft-tuexen-tsvwg-sctp-dtls-encaps | ||
Stream | Internet Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Gorry Fairhurst | ||
Shepherd write-up | Show (last changed 2014-12-06) | ||
IESG | IESG state | RFC 8261 (Proposed Standard) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Spencer Dawkins | ||
Send notices to | (None) | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | No IANA Actions |
Internet Engineering Task Force (IETF) M. Tuexen Request for Comments: 8261 Muenster Univ. of Appl. Sciences Category: Standards Track R. Stewart ISSN: 2070-1721 Netflix, Inc. R. Jesup WorldGate Communications S. Loreto Ericsson November 2017 Datagram Transport Layer Security (DTLS) Encapsulation of SCTP Packets Abstract The Stream Control Transmission Protocol (SCTP) is a transport protocol originally defined to run on top of the network protocols IPv4 or IPv6. This document specifies how SCTP can be used on top of the Datagram Transport Layer Security (DTLS) protocol. Using the encapsulation method described in this document, SCTP is unaware of the protocols being used below DTLS; hence, explicit IP addresses cannot be used in the SCTP control chunks. As a consequence, the SCTP associations carried over DTLS can only be single-homed. 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 https://www.rfc-editor.org/info/rfc8261. Tuexen, et al. Standards Track [Page 1] RFC 8261 SCTP over DTLS November 2017 Copyright Notice Copyright (c) 2017 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 (https://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. Table of Contents 1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Encapsulation and Decapsulation Procedure . . . . . . . . . . 3 4. General Considerations . . . . . . . . . . . . . . . . . . . 4 5. DTLS Considerations . . . . . . . . . . . . . . . . . . . . . 4 6. SCTP Considerations . . . . . . . . . . . . . . . . . . . . . 5 7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6 8. Security Considerations . . . . . . . . . . . . . . . . . . . 7 9. References . . . . . . . . . . . . . . . . . . . . . . . . . 7 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 10 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 10 Tuexen, et al. Standards Track [Page 2] RFC 8261 SCTP over DTLS November 2017 1. Overview The Stream Control Transmission Protocol (SCTP) as defined in [RFC4960] is a transport protocol running on top of the network protocols IPv4 [RFC0791] or IPv6 [RFC8200]. This document specifies how SCTP is used on top of the Datagram Transport Layer Security (DTLS) protocol. DTLS 1.0 is defined in [RFC4347], and the latest version when this RFC was published, DTLS 1.2, is defined in [RFC6347]. This encapsulation is used, for example, within the WebRTC protocol suite (see [RTC-OVERVIEW] for an overview) for transporting non-SRTP data between browsers. The architecture of this stack is described in [DATA-CHAN]. +----------+ | SCTP | +----------+ | DTLS | +----------+ | ICE/UDP | +----------+ Figure 1: Basic Stack Diagram This encapsulation of SCTP over DTLS over UDP or ICE/UDP (see [RFC5245]) can provide a NAT traversal solution in addition to confidentiality, source authentication, and integrity-protected transfers. Please note that using ICE does not necessarily implyShow full document text