ESP Header Compression and Diet-ESP
draft-mglt-ipsecme-diet-esp-07

Document Type Active Internet-Draft (individual)
Last updated 2019-03-11
Replaces draft-mglt-6lo-diet-esp-payload-compression, draft-mglt-6lo-diet-esp
Stream (None)
Intended RFC status (None)
Formats plain text xml pdf html bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
ipsecme                                                       D. Migault
Internet-Draft                                                  Ericsson
Intended status: Standards Track                             T. Guggemos
Expires: September 12, 2019                                   LMU Munich
                                                              C. Bormann
                                                 Universitaet Bremen TZI
                                                             D. Schinazi
                                                              Google LLC
                                                          March 11, 2019

                  ESP Header Compression and Diet-ESP
                     draft-mglt-ipsecme-diet-esp-07

Abstract

   With the use of encrypted ESP for secure IP communication, the
   compression of IP payload is only possible with complex frameworks,
   such as RObust Header Compression (ROHC).  Such frameworks are too
   complex for numerous use cases and especially for IoT scenarios,
   which makes IPsec not being used here, although it offers
   architectural benefits.

   ESP Header Compression (EHC) defines a flexible framework to compress
   communications protected with IPsec/ESP.  Compression and
   decompression is defined by EHC Rules orchestrated by EHC Strategies.
   The necessary state is hold within the IPsec Security Association and
   can be negotiated during key agreement, e.g. with IKEv2.

   The document specifies the necessary parameters of the EHC Context to
   allow compression of ESP and the most common included protocols, such
   as IPv4, IPv6, UDP and TCP and the corresponding EHC Rules.  It also
   defines the Diet-ESP EHC Strategy which compresses up to 32 bytes per
   packet for traditional IPv6 VPN and up to 66 bytes for IPv6 VPN sent
   over a single TCP or UDP session.

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any

Migault, et al.        Expires September 12, 2019               [Page 1]
Internet-Draft                  Diet-ESP                      March 2019

   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 September 12, 2019.

Copyright Notice

   Copyright (c) 2019 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.  Requirements notation . . . . . . . . . . . . . . . . . . . .   3
   2.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Protocol Overview . . . . . . . . . . . . . . . . . . . . . .   4
   5.  IPsec Compression Mode  . . . . . . . . . . . . . . . . . . .   7
   6.  EHC Context . . . . . . . . . . . . . . . . . . . . . . . . .   7
     6.1.  EHC Context Parameters for ESP  . . . . . . . . . . . . .   8
     6.2.  EHC Context Parameters for Inner IP . . . . . . . . . . .   8
     6.3.  EHC Context Parameters for Transport Protocol . . . . . .   9
   7.  EHC Rules . . . . . . . . . . . . . . . . . . . . . . . . . .  11
     7.1.  EHC Rules for ESP . . . . . . . . . . . . . . . . . . . .  13
     7.2.  EHC Rules for inner IPv4  . . . . . . . . . . . . . . . .  15
     7.3.  EHC Rules for inner IPv6  . . . . . . . . . . . . . . . .  17
     7.4.  EHC Rules for UDP . . . . . . . . . . . . . . . . . . . .  18
     7.5.  EHC Rules for UDP-Lite  . . . . . . . . . . . . . . . . .  19
     7.6.  EHC Rules for TCP . . . . . . . . . . . . . . . . . . . .  20
   8.  Diet-ESP EHC Strategy . . . . . . . . . . . . . . . . . . . .  21
     8.1.  Outbound Packet Processing  . . . . . . . . . . . . . . .  24
     8.2.  Inbound Packet Processing . . . . . . . . . . . . . . . .  26
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  29
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  29
Show full document text