A new Request for Comments is now available in online RFC libraries.
RFC 9018
Title: Interoperable Domain Name System (DNS)
Server Cookies
Author: O. Sury,
W. Toorop,
D. Eastlake 3rd,
M. Andrews
Status: Standards Track
Stream: IETF
Date: April 2021
Mailbox: ond...@isc.org,
wil...@nlnetlabs.nl,
d3e...@gmail.com,
ma...@isc.org
Pages: 16
Updates: RFC 7873
I-D Tag: draft-ietf-dnsop-server-cookies-05.txt
URL: https://www.rfc-editor.org/info/rfc9018
DOI: 10.17487/RFC9018
DNS Cookies, as specified in RFC 7873, are a lightweight DNS
transaction security mechanism that provide limited protection to DNS
servers and clients against a variety of denial-of-service
amplification, forgery, or cache-poisoning attacks by off-path
attackers.
This document updates RFC 7873 with precise directions for creating
Server Cookies so that an anycast server set including diverse
implementations will interoperate with standard clients, with
suggestions for constructing Client Cookies in a privacy-preserving
fashion, and with suggestions on how to update a Server Secret. An
IANA registry listing the methods and associated pseudorandom
function suitable for creating DNS Server Cookies has been created
with the method described in this document as the first and, as of
the time of publication, only entry.
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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