Deprecation of IKEv1 and obsoleted algorithms
draft-pwouters-ikev1-ipsec-graveyard-05

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Network                                                  P. Wouters, Ed.
Internet-Draft                                                   Red Hat
Updates: 7296,8221,8247 (if approved)                      July 13, 2020
Intended status: Standards Track
Expires: January 14, 2021

             Deprecation of IKEv1 and obsoleted algorithms
                draft-pwouters-ikev1-ipsec-graveyard-05

Abstract

   Internet Key Exchange version 1 (IKEv1) is deprecated.  Accordingly,
   IKEv1 has been moved to Historic status.  A number of old algorithms
   that are associated with IKEv1, and not widely implemented for IKEv2
   are deprecated as well.  IANA is instructed to close all IKEv1
   registries.

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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   This Internet-Draft will expire on January 14, 2021.

Copyright Notice

   Copyright (c) 2020 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
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Internet-Draft  Deprecation of IKEv1 and some algorithms       July 2020

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   2
   3.  RFC 2409 to Historic  . . . . . . . . . . . . . . . . . . . .   3
   4.  Deprecating obsolete algorithms . . . . . . . . . . . . . . .   3
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   3
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   IKEv1 [RFC2409] and its related documents for ISAKMP [RFC2408] and
   IPsec DOI [RFC2407] were obsoleted by IKEv2 [RFC4306] in December
   2005.  The latest version of IKEv2 at the time of writing was
   published in 2014 in [RFC7296].  The Internet Key Exchange (IKE)
   version 2 has replaced version 1 over 15 years ago.  IKEv2 has now
   seen wide deployment and provides a full replacement for all IKEv1
   functionality.  No new modifications or new algorithms have been
   accepted for IKEv1 for at least a decade.  IKEv2 addresses various
   issues present in IKEv1, such as IKEv1 being vulnerable to
   amplification attacks.  IKEv1 has been moved to Historic status, and
   this document requests IANA to close all IKEv1 registries.

   Algorithm implementation requirements and usage guidelines for IKEv2
   [RFC8247] and ESP/AH [RFC8223] gives guidance to implementors but
   limits that guidance to avoid broken or weak algorithms.  It does not
   deprecate algorithms that have aged and are not in use, but leave
   these algorithms in a state of "MAY be used".  This document
   deprecates those algorithms that are no longer advised but for which
   there are no known attacks resulting in their earlier deprecation.

2.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

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3.  RFC 2409 to Historic

   IKEv1 is deprecated.  Systems running IKEv1 should be upgraded and
   reconfigured to run IKEv2.  Systems that support IKEv1 but not IKEv2
   are most likely also unsuitable candidates for continued operation.
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