Authentication and (D)TLS Profile for DNS-over-TLS and DNS-over-DTLS
draft-ietf-dprive-dtls-and-tls-profiles-00
dprive S. Dickinson
Internet-Draft Sinodun
Intended status: Standards Track D. Gillmor
Expires: August 2, 2016 ACLU
T. Reddy
Cisco
January 30, 2016
Authentication and (D)TLS Profile for DNS-over-TLS and DNS-over-DTLS
draft-ietf-dprive-dtls-and-tls-profiles-00
Abstract
This document describes how a DNS client can use a domain name to
authenticate a DNS server that uses Transport Layer Security (TLS)
and Datagram TLS (DTLS). Additionally, it defines (D)TLS profiles
for DNS clients and servers implementing DNS-over-TLS and DNS-over-
DTLS.
Status of This Memo
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provisions of BCP 78 and BCP 79.
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Internet-Drafts are draft documents valid for a maximum of six months
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 August 2, 2016.
Copyright Notice
Copyright (c) 2016 IETF Trust and the persons identified as the
document authors. All rights reserved.
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Dickinson, et al. Expires August 2, 2016 [Page 1]
Internet-Draft (D)TLS Authentication January 2016
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Discussion . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1. Background . . . . . . . . . . . . . . . . . . . . . . . 5
4.2. Usage Profiles . . . . . . . . . . . . . . . . . . . . . 5
4.3. Authentication . . . . . . . . . . . . . . . . . . . . . 6
4.3.1. DNS-over-(D)TLS Bootstrapping Problems . . . . . . . 6
4.3.2. Credential Verification . . . . . . . . . . . . . . . 7
4.3.3. Implementation guidance . . . . . . . . . . . . . . . 7
5. Authentication in Opportunistic DNS-over(D)TLS Privacy . . . 7
6. Authentication in Strict DNS-over(D)TLS Privacy . . . . . . . 7
7. In Band Source of Domain Name: SRV Service Label . . . . . . 8
8. Out of Band Sources of Domain Name . . . . . . . . . . . . . 8
8.1. Full direct configuration . . . . . . . . . . . . . . . . 8
8.2. Direct configuration of name only . . . . . . . . . . . . 8
8.3. DHCP . . . . . . . . . . . . . . . . . . . . . . . . . . 9
9. Credential Verification . . . . . . . . . . . . . . . . . . . 9
9.1. X.509 Certificate Based Authentication . . . . . . . . . 9
9.2. DANE . . . . . . . . . . . . . . . . . . . . . . . . . . 10
9.2.1. Direct DNS Lookup . . . . . . . . . . . . . . . . . . 10
9.2.2. TLS DNSSEC Chain extension . . . . . . . . . . . . . 11
10. Combined Credentials with SPKI Pinsets . . . . . . . . . . . 11
11. (D)TLS Protocol Profile . . . . . . . . . . . . . . . . . . . 12
12. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 13
13. Security Considerations . . . . . . . . . . . . . . . . . . . 13
13.1. Counter-measures to DNS Traffic Analysis . . . . . . . . 13
14. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 13
15. References . . . . . . . . . . . . . . . . . . . . . . . . . 14
15.1. Normative References . . . . . . . . . . . . . . . . . . 14
15.2. Informative References . . . . . . . . . . . . . . . . . 15
Appendix A. Server capability probing and caching by DNS clients 16
Appendix B. Changes between revisions . . . . . . . . . . . . . 17
B.1. draft-ietf-dprive-dtls-and-tls-profiles . . . . . . . . . 17
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