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RFC 7873
Title: Domain Name System (DNS) Cookies
Author: D. Eastlake 3rd,
M. Andrews
Status: Standards Track
Stream: IETF
Date: May 2016
Mailbox: d3e3e3@gmail.com,
marka@isc.org
Pages: 25
Characters: 55356
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-dnsop-cookies-10.txt
URL: https://www.rfc-editor.org/info/rfc7873
DOI: http://dx.doi.org/10.17487/RFC7873
DNS Cookies are a lightweight DNS transaction security mechanism that
provides limited protection to DNS servers and clients against a
variety of increasingly common denial-of-service and amplification/
forgery or cache poisoning attacks by off-path attackers. DNS
Cookies are tolerant of NAT, NAT-PT (Network Address Translation -
Protocol Translation), and anycast and can be incrementally deployed.
(Since DNS Cookies are only returned to the IP address from which
they were originally received, they cannot be used to generally track
Internet users.)
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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