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UpdatedPROPOSED STANDARDIETF stream

RFC 7873: Domain Name System (DNS) Cookies

Still current, but amended. Parts of this document are changed or extended by RFC 9018. Read both.

In plain English — editorial summary, not part of the RFC

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.)

Document record

Document ID
RFC7873
Published
May 2016
Authors
D. Eastlake 3rd; M. Andrews
Status
PROPOSED STANDARD
Stream
IETF
Area
ops
Pages
25
Also known as
—
Updated by:
RFC 9018

Topics

Referenced by

One later RFC formally updates or obsoletes part of this document.

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About this page

The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

Last checked against the RFC Editor index on . RFCs are never revised after publication; changes are issued as new documents.

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canonical URL: /rfc/7873-domain-name-system-dns-cookies