Believing NSEC records in the DNS root.
draft-wkumari-dnsop-cheese-shop-00
The information below is for an old version of the document.
| Document | Type | Active Internet-Draft (individual) | |
|---|---|---|---|
| Authors | Warren "Ace" Kumari , Geoff Huston | ||
| Last updated | 2015-10-08 | ||
| Stream | (None) | ||
| Formats | plain text htmlized pdfized bibtex | ||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | I-D Exists | |
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
draft-wkumari-dnsop-cheese-shop-00
Network Working Group W. Kumari
Internet-Draft Google
Intended status: Informational G. Huston
Expires: April 10, 2016 APNIC
October 8, 2015
Believing NSEC records in the DNS root.
draft-wkumari-dnsop-cheese-shop-00
Abstract
This document cuts down on junk queries to the DNS root and improves
performance by answering queries locally from compliant resolvers.
It does this by actually believing the NSEC responses.
[ Ed note: Text inside square brackets ([]) is additional background
information, answers to frequently asked questions, general musings,
etc. They will be removed before publication.]
[ This document is being collaborated on in Github at:
https://github.com/wkumari/draft-wkumari-dnsop-cheese-shop. The most
recent version of the document, open issues, etc should all be
available here. The authors (gratefully) accept pull requests ]
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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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 April 10, 2016.
Copyright Notice
Copyright (c) 2015 IETF Trust and the persons identified as the
document authors. All rights reserved.
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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
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the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Background . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Believing NSEC records. . . . . . . . . . . . . . . . . . . . 2
2.1. Requirements notation . . . . . . . . . . . . . . . . . . 3
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3
4. Security Considerations . . . . . . . . . . . . . . . . . . . 3
5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 3
6. References . . . . . . . . . . . . . . . . . . . . . . . . . 3
6.1. Normative References . . . . . . . . . . . . . . . . . . 3
6.2. Informative References . . . . . . . . . . . . . . . . . 3
Appendix A. Changes / Author Notes. . . . . . . . . . . . . . . 4
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 4
1. Background
[ This section may be removed before publication... but I'd prefer
not, it provides useful context ]
The title of this draft (draft-wkumari-dnsop-cheese-shop) comes from
a famous Monty Python skit - "The Cheese Shop". Knowledge of the
skit is mandatory background knowledge for this document...
Video here: https://www.youtube.com/watch?v=PPN3KTtrnZM
2. Believing NSEC records.
This is a simply a refinement of
[I-D.fujiwara-dnsop-nsec-aggressiveuse], for a limited use case.
Fiull credit to the authors of the aforementioned draft, and this
draft does not replace that draft, nor remove the need for the
broader consideration of the use of NSEC records as described in
[I-D.fujiwara-dnsop-nsec-aggressiveuse].
The scope of this document is addressed specifically to recursive
validating resolvers when querying the root zone.
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If the (DNSSEC validated) answer to a query to a root server is an
NXDOMAIN then the resolver SHOULD cache the NSEC record provided in
the response. The resolver should NOT send further queries for names
within the range of the NSEC record for the lifetime of the cached
NSEC TTL. Instead, the resolver SHOULD answer these queries directly
with NXDOMAIN (and NSEC records if so signalled by EDNS). They
SHOULD set the AA bit and AD bits.
2.1. Requirements notation
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
3. IANA Considerations
This document contains no IANA considerations.
[ We MAY want to add something about setting the NSEC TTL
appropriately?! ]
4. Security Considerations
TODO: Fill this out!
5. Acknowledgements
The authors wish to thank some folk.
6. References
6.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/
RFC2119, March 1997,
<http://www.rfc-editor.org/info/rfc2119>.
6.2. Informative References
[I-D.fujiwara-dnsop-nsec-aggressiveuse]
Fujiwara, K. and A. Kato, "Aggressive use of NSEC/NSEC3",
draft-fujiwara-dnsop-nsec-aggressiveuse-01 (work in
progress), July 2015.
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Appendix A. Changes / Author Notes.
[RFC Editor: Please remove this section before publication ]
From -00 to -01.
o Nothing changed in the template!
Authors' Addresses
Warren Kumari
Google
1600 Amphitheatre Parkway
Mountain View, CA 94043
US
Email: warren@kumari.net
Geoff Huston
APNIC
6 Cordelia St
South Brisbane QLD 4001
AUS
Email: gih@apnic.net
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