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RFC 8198
Title: Aggressive Use of DNSSEC-Validated Cache
Author: K. Fujiwara,
A. Kato,
W. Kumari
Status: Standards Track
Stream: IETF
Date: July 2017
Mailbox: fujiwara@jprs.co.jp,
kato@wide.ad.jp,
warren@kumari.net
Pages: 13
Characters: 27918
Updates: RFC 4035
I-D Tag: draft-ietf-dnsop-nsec-aggressiveuse-10.txt
URL: https://www.rfc-editor.org/info/rfc8198
DOI: 10.17487/RFC8198
The DNS relies upon caching to scale; however, the cache lookup
generally requires an exact match. This document specifies the use
of NSEC/NSEC3 resource records to allow DNSSEC-validating resolvers
to generate negative answers within a range and positive answers from
wildcards. This increases performance, decreases latency, decreases
resource utilization on both authoritative and recursive servers, and
increases privacy. Also, it may help increase resilience to certain
DoS attacks in some circumstances.
This document updates RFC 4035 by allowing validating resolvers to
generate negative answers based upon NSEC/NSEC3 records and positive
answers in the presence of wildcards.
This document is a product of the Domain Name System Operations Working Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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