Experimental Option for TCP Host Identification
draft-williams-exp-tcp-host-id-opt-07

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Last updated 2016-02-09 (latest revision 2015-11-05)
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Network Working Group                                        B. Williams
Internet-Draft                                              Akamai, Inc.
Intended status: Experimental                               M. Boucadair
Expires: May 8, 2016                                      France Telecom
                                                                 D. Wing
                                                     Cisco Systems, Inc.
                                                        November 5, 2015

            Experimental Option for TCP Host Identification
                 draft-williams-exp-tcp-host-id-opt-07

Abstract

   Recent proposals discussed in the IETF have identified benefits to
   more distinctly identifying the hosts that are hidden behind a shared
   address/prefix sharing device or application-layer proxy.  Analysis
   indicates that the use of a TCP option for this purpose can be
   successfully applied to some use cases.  This document discusses
   design, deployment, and privacy considerations for such a TCP option
   that is in operational use on the Internet today.

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
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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 8, 2016.

Copyright Notice

   Copyright (c) 2015 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

Williams, et al.           Expires May 8, 2016                  [Page 1]
Internet-Draft       Experimental TCP Host ID Option       November 2015

   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.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Important Use Cases . . . . . . . . . . . . . . . . . . .   3
     1.2.  Experiment Goals  . . . . . . . . . . . . . . . . . . . .   5
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Option Format . . . . . . . . . . . . . . . . . . . . . . . .   6
   4.  Option Use  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Option Values . . . . . . . . . . . . . . . . . . . . . .   6
     4.2.  Sending Host Requirements . . . . . . . . . . . . . . . .   7
       4.2.1.  Alternative SYN Cookie Support  . . . . . . . . . . .   8
       4.2.2.  Persistent TCP Connections  . . . . . . . . . . . . .   8
       4.2.3.  Packet Fragmentation  . . . . . . . . . . . . . . . .   9
     4.3.  Multiple In-Path HOST_ID Senders  . . . . . . . . . . . .   9
     4.4.  Option Interpretation . . . . . . . . . . . . . . . . . .  10
   5.  Interaction with Other TCP Options  . . . . . . . . . . . . .  11
     5.1.  Multipath TCP (MPTCP) . . . . . . . . . . . . . . . . . .  11
     5.2.  Authentication Option (TCP-AO)  . . . . . . . . . . . . .  11
     5.3.  TCP Fast Open (TFO) . . . . . . . . . . . . . . . . . . .  11
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   7.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  13
   8.  Pervasive Monitoring Considerations . . . . . . . . . . . . .  14
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  15
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  15
     11.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Appendix A.  Change History . . . . . . . . . . . . . . . . . . .  18
     A.1.  Changes from version 06 to 07 . . . . . . . . . . . . . .  18
     A.2.  Changes from version 05 to 06 . . . . . . . . . . . . . .  18
     A.3.  Changes from version 04 to 05 . . . . . . . . . . . . . .  18
     A.4.  Changes from version 03 to 04 . . . . . . . . . . . . . .  19
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