Internet Key Exchange Protocol Version 2 (IKEv2) Configuration for Encrypted DNS
draft-btw-add-ipsecme-ike-00

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ADD                                                         M. Boucadair
Internet-Draft                                                    Orange
Intended status: Standards Track                                T. Reddy
Expires: October 9, 2020                                          McAfee
                                                                 D. Wing
                                                                  Citrix
                                                              V. Smyslov
                                                              ELVIS-PLUS
                                                           April 7, 2020

   Internet Key Exchange Protocol Version 2 (IKEv2) Configuration for
                             Encrypted DNS
                      draft-btw-add-ipsecme-ike-00

Abstract

   This document specifies a new Internet Key Exchange Protocol Version
   2 (IKEv2) Configuration Payload Attribute Type for encrypted DNS such
   as DNS-over-HTTPS (DoH) and DNS-over-TLS (DoT).

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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   and may be updated, replaced, or obsoleted by other documents at any
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   This Internet-Draft will expire on October 9, 2020.

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
   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

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   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
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Sample Deployment Scenarios . . . . . . . . . . . . . . . . .   3
     3.1.  Roaming Enterprise Users  . . . . . . . . . . . . . . . .   3
     3.2.  VPN Service Provider  . . . . . . . . . . . . . . . . . .   4
     3.3.  DNS Offload . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  INTERNAL_ENC_DNS Attribute  . . . . . . . . . . . . . . . . .   4
   5.  URI Template  . . . . . . . . . . . . . . . . . . . . . . . .   6
   6.  IKEv2 Protocol Exchange . . . . . . . . . . . . . . . . . . .   6
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
     8.1.  Configuration Payload Attribute Type  . . . . . . . . . .   8
     8.2.  Encrypted DNS Types . . . . . . . . . . . . . . . . . . .   9
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   9
     10.2.  Informative References . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   This document specifies encrypted DNS configuration for an IKE
   initiator, particularly the Authentication Domain Name (ADN, defined
   in [RFC8310]) of DNS-over-HTTPS (DoH) [RFC8484] or DNS-over-TLS (DoT)
   [RFC7858] server using Internet Key Exchange Protocol Version 2
   (IKEv2) [RFC7296].

   Particularly, this document introduces a new IKEv2 Configuration
   Payload Attribute Types (Section 4) for the support of encrypted DNS
   servers (e.g., DoT, DoH).

   Sample use cases are discussed in Section 3.  The Configuration
   Payload Attribute Type defined in Section 4 is not specific to these
   deployments, but can be used in other deployment contexts.

   Note that, for many years, typical designs has often considered that
   the DNS server was usually located inside the protected domain, but
   could theoretically be located outside of it.  With DoH or DoT, the
   latter option becomes plausible.

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