The Impact of Transport Header Encryption on Operation and Evolution of the Internet
draft-fairhurst-tsvwg-transport-encrypt-04

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TSVWG                                                       G. Fairhurst
Internet-Draft                                    University of Aberdeen
Intended status: Informational                              C.S. Perkins
Expires: March 29, 2018                            University of Glasgow
                                                      September 27, 2017

The Impact of Transport Header Encryption on Operation and Evolution of
                              the Internet
               draft-fairhurst-tsvwg-transport-encrypt-04

Abstract

   This document describes implications of applying end-to-end
   encryption at the transport layer.  It identifies some in-network
   uses of transport layer header information that can be used with a
   transport header integrity check.  It reviews the implication of
   developing encrypted end-to-end transport protocols and examines the
   implication of developing and deploying encrypted end-to-end
   transport protocols.  Since transport measurement and analysis of the
   impact of network characteristics have been important to the design
   of current transport protocols, it also considers some anticipated
   implications on transport and application evolution.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on March 29, 2018.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Fairhurst & Perkins      Expires March 29, 2018                 [Page 1]
Internet-Draft            Transport Encryption            September 2017

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   Please review these documents carefully, as they describe your rights
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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  2
     1.1.  Current uses of Transport Headers within the Network . . .  6
       1.1.1.  Observing Transport Information in the Network . . . .  7
         1.1.1.1.  Flow Identification  . . . . . . . . . . . . . . .  7
         1.1.1.2.  Metrics derived from Transport Layer Headers . . .  7
         1.1.1.3.  Metrics derived from Network Layer Headers . . . . 10
       1.1.2.  Transport Measurement  . . . . . . . . . . . . . . . . 12
         1.1.2.1.  Point of Measurement . . . . . . . . . . . . . . . 12
         1.1.2.2.  Use by Operators to Plan and Provision Networks  . 13
         1.1.2.3.  Service Performance Measurement  . . . . . . . . . 13
         1.1.2.4.  Measuring Transport to Support Network Operations  13
       1.1.3.  Use for Network Diagnostics and Troubleshooting  . . . 15
       1.1.4.  Observing Headers to Implement Network Policy  . . . . 15
   2.  Encryption and Authentication of Transport Headers . . . . . . 15
     2.1.  Authenticating the Transport Protocol Header . . . . . . . 17
     2.2.  Encrypting the Transport Payload . . . . . . . . . . . . . 17
     2.3.  Encrypting the Transport Header  . . . . . . . . . . . . . 18
     2.4.  Authenticating Transport Information and Selectively
           Encrypting the Transport Header  . . . . . . . . . . . . . 18
     2.5.  Adding Transport Information to Network-Layer Protocol
           Headers  . . . . . . . . . . . . . . . . . . . . . . . . . 18
   3.  Implications of Protecting the Transport Headers . . . . . . . 19
     3.1.  Independent Measurement  . . . . . . . . . . . . . . . . . 19
     3.2.  Characterising "Unknown" Network Traffic . . . . . . . . . 20
     3.3.  Accountability and Internet Transport Protocols  . . . . . 20
     3.4.  Impact on Research, Development and Deployment . . . . . . 21
   4.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 21
   5.  Security Considerations  . . . . . . . . . . . . . . . . . . . 22
   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 22
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