Usage and (D)TLS Profiles for DNS-over-(D)TLS
draft-ietf-dprive-dtls-and-tls-profiles-10
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| Document | Type | Active Internet-Draft (dprive WG) | |
| Last updated | 2017-06-16 | ||
| Replaces | draft-dgr-dprive-dtls-and-tls-profiles | ||
| Stream | IETF | ||
| Intended RFC status | Proposed Standard | ||
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| Document shepherd | Tim Wicinski | ||
| Shepherd write-up | Show (last changed 2017-01-24) | ||
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| Responsible AD | Terry Manderson | ||
| Send notices to | "Tim Wicinski" <tjw.ietf@gmail.com> | ||
| IANA | IANA review state | Version Changed - Review Needed | |
dprive S. Dickinson
Internet-Draft Sinodun
Updates: 7858 (if approved) D. Gillmor
Intended status: Standards Track ACLU
Expires: December 18, 2017 T. Reddy
McAfee
June 16, 2017
Usage and (D)TLS Profiles for DNS-over-(D)TLS
draft-ietf-dprive-dtls-and-tls-profiles-10
Abstract
This document discusses Usage Profiles, based on one or more
authentication mechanisms, which can be used for DNS over Transport
Layer Security (TLS) or Datagram TLS (DTLS). These profiles can
increase the privacy of DNS transactions compared to using only clear
text DNS. This document also specifies new authentication mechanisms
- it describes several ways a DNS client can use an authentication
domain name to authenticate a (D)TLS connection to a DNS server.
Additionally, it defines (D)TLS protocol profiles for DNS clients and
servers implementing DNS-over-(D)TLS. This document updates RFC
7858.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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and may be updated, replaced, or obsoleted by other documents at any
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 December 18, 2017.
Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the
document authors. All rights reserved.
Dickinson, et al. Expires December 18, 2017 [Page 1]
Internet-Draft (D)TLS Authentication for DNS June 2017
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. Discussion . . . . . . . . . . . . . . . . . . . . . . . . . 7
5. Usage Profiles . . . . . . . . . . . . . . . . . . . . . . . 7
5.1. DNS Resolution . . . . . . . . . . . . . . . . . . . . . 10
6. Authentication in DNS-over(D)TLS . . . . . . . . . . . . . . 10
6.1. DNS-over-(D)TLS Startup Configuration Problems . . . . . 10
6.2. Credential Verification . . . . . . . . . . . . . . . . . 11
6.3. Summary of Authentication Mechanisms . . . . . . . . . . 11
6.4. Combining Authentication Mechanisms . . . . . . . . . . . 14
6.5. Authentication in Opportunistic Privacy . . . . . . . . . 14
6.6. Authentication in Strict Privacy . . . . . . . . . . . . 15
6.7. Implementation guidance . . . . . . . . . . . . . . . . . 15
7. Sources of Authentication Domain Names . . . . . . . . . . . 15
7.1. Full direct configuration . . . . . . . . . . . . . . . . 15
7.2. Direct configuration of ADN only . . . . . . . . . . . . 16
7.3. Dynamic discovery of ADN . . . . . . . . . . . . . . . . 16
7.3.1. DHCP . . . . . . . . . . . . . . . . . . . . . . . . 16
8. Authentication Domain Name based Credential Verification . . 17
8.1. PKIX Certificate Based Authentication . . . . . . . . . . 17
8.2. DANE . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.2.1. Direct DNS Lookup . . . . . . . . . . . . . . . . . . 18
8.2.2. TLS DNSSEC Chain extension . . . . . . . . . . . . . 18
9. (D)TLS Protocol Profile . . . . . . . . . . . . . . . . . . . 19
10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 20
11. Security Considerations . . . . . . . . . . . . . . . . . . . 20
11.1. Counter-measures to DNS Traffic Analysis . . . . . . . . 20
12. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 21
13. References . . . . . . . . . . . . . . . . . . . . . . . . . 21
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