Definition and Use of DNSSEC Negative Trust Anchors
RFC 7646
Document | Type | RFC - Informational (September 2015; No errata) | |
---|---|---|---|
Authors | P Ebersman , Warren Kumari , Chris Griffiths , Jason Livingood , Ralf Weber | ||
Last updated | 2015-10-14 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Tim Wicinski | ||
Shepherd write-up | Show (last changed 2015-05-20) | ||
IESG | IESG state | RFC 7646 (Informational) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Joel Jaeggli | ||
Send notices to | (None) | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | No IANA Actions |
Internet Engineering Task Force (IETF) P. Ebersman Request for Comments: 7646 Comcast Category: Informational W. Kumari ISSN: 2070-1721 Google C. Griffiths Nominet J. Livingood Comcast R. Weber Nominum September 2015 Definition and Use of DNSSEC Negative Trust Anchors Abstract DNS Security Extensions (DNSSEC) is now entering widespread deployment. However, domain signing tools and processes are not yet as mature and reliable as those for non-DNSSEC-related domain administration tools and processes. This document defines Negative Trust Anchors (NTAs), which can be used to mitigate DNSSEC validation failures by disabling DNSSEC validation at specified domains. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7646. Ebersman, et al. Informational [Page 1] RFC 7646 DNSSEC Negative Trust Anchors September 2015 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 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 and Motivation .....................................3 1.1. Definition of a Negative Trust Anchor ......................3 1.2. Motivations for Negative Trust Anchors .....................4 1.2.1. Mitigating Domain Validation Failures ...............4 1.2.2. Improving End-User Experience .......................4 1.2.3. Avoiding Switching to a Non-validating Resolver .....5 2. Use of a Negative Trust Anchor ..................................5 2.1. Applicability of Negative Trust Anchors ....................6 3. Managing Negative Trust Anchors .................................7 3.1. Alerting Users to Negative Trust Anchor Use ................7 4. Removal of a Negative Trust Anchor ..............................7 5. Comparison to Other DNS Misconfigurations .......................8 6. Intentionally Broken Domains ....................................8 7. Discovering Broken Domains ......................................9 8. Security Considerations ........................................11 9. References .....................................................11 9.1. Normative References ......................................11 9.2. Informative References ....................................12 Appendix A. Configuration Examples ...............................13 A.1. NLnet Labs Unbound ........................................13 A.2. Internet System Consortium (ISC) BIND .....................14 A.3. Nominum Vantio ............................................14 Acknowledgements ..................................................15 Authors' Addresses ................................................15 Ebersman, et al. Informational [Page 2] RFC 7646 DNSSEC Negative Trust Anchors September 2015 1. Introduction and Motivation DNSSEC has now entered widespread deployment. However, the DNSSEC signing tools and processes are less mature and reliable than those for non-DNSSEC-related administration. As a result, operators of DNSShow full document text