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DNS Privacy Considerations (RFC7626)

IP.com Disclosure Number: IPCOM000242891D
Original Publication Date: 2015-Aug-01
Included in the Prior Art Database: 2015-Aug-27
Document File: 34 page(s) / 43K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Bortzmeyer: AUTHOR

Abstract

This document is an analysis of the DNS privacy issues, in the spirit of Section 8 of [RFC6973].

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 6% of the total text.

Internet Engineering Task Force (IETF)                     S. Bortzmeyer Request for Comments: 7626                                         AFNIC Category: Informational                                      August 2015 ISSN: 2070-1721

                        DNS Privacy Considerations

Abstract

   This document describes the privacy issues associated with the use of    the DNS by Internet users.  It is intended to be an analysis of the    present situation and does not prescribe solutions.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for informational purposes.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Not all documents    approved by the IESG are a candidate for any level of Internet    Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at    http://www.rfc-editor.org/info/rfc7626.

Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the    document authors.  All rights reserved.

   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    to this document.  Code Components extracted from this document must    include Simplified BSD License text as described in Section 4.e of    the Trust Legal Provisions and are provided without warranty as    described in the Simplified BSD License.

Bortzmeyer                    Informational                     [Page 1]
 RFC 7626                       DNS Privacy                   August 2015

 Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2

   2.  Risks . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4

     2.1.  The Alleged Public Nature of DNS Data . . . . . . . . . .   4

     2.2.  Data in the DNS Request . . . . . . . . . . . . . . . . .   5

     2.3.  Cache Snooping  . . . . . . . . . . . . . . . . . . . . .   6

     2.4.  On the Wire . . . . . . . . . . . . . . . . . . . . . . .   7

     2.5.  In the Servers  . . . . . . . . . . . . . . . . . . . . .   8

       2.5.1.  In the Recursive Resolvers  . . . . . . . . . . . . .   8

       2.5.2.  In the Authoritativ...