DNS Zone Transfer using DNS Stateful Operations
draft-zatda-dprive-xfr-using-dso-00

Document Type Active Internet-Draft (individual)
Last updated 2019-07-08
Stream (None)
Intended RFC status (None)
Formats plain text pdf htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
dprive                                                          H. Zhang
Internet-Draft                                                   P. Aras
Intended status: Standards Track                              Salesforce
Expires: January 9, 2020                                       W. Toorop
                                                              NLnet Labs
                                                            S. Dickinson
                                                              Sinodun IT
                                                               A. Mankin
                                                              Salesforce
                                                            July 8, 2019

            DNS Zone Transfer using DNS Stateful Operations
                  draft-zatda-dprive-xfr-using-dso-00

Abstract

   DNS zone transfers are transmitted in clear text, which gives
   attackers the opportunity to collect the content of a zone by
   eavesdropping on network connections.  This document specifies use of
   DNS Stateful Operations to enable a subscribe/publish mechanism for
   zone transfers reducing the over head introduced by NOTITY/SOA
   interactions prior to zone transfer request.  This additionally
   prevents zone contents collection via passive monitoring of zone
   transfers by restricting XFR using DSO to require TLS.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on January 9, 2020.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Zhang, et al.            Expires January 9, 2020                [Page 1]
Internet-Draft                XFR-using-DSO                    July 2019

   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Use Cases for XFR-using-DSO . . . . . . . . . . . . . . . . .   4
   4.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   5.  Transport . . . . . . . . . . . . . . . . . . . . . . . . . .   5
   6.  State Considerations  . . . . . . . . . . . . . . . . . . . .   5
   7.  Protocol Operation  . . . . . . . . . . . . . . . . . . . . .   6
     7.1.  XuD SUBSCRIBE-XFR . . . . . . . . . . . . . . . . . . . .   6
       7.1.1.  SUBSCRIBE-XFR Request . . . . . . . . . . . . . . . .   7
       7.1.2.  SUBSCRIBE-XFR Response  . . . . . . . . . . . . . . .   9
     7.2.  XuD Notifications . . . . . . . . . . . . . . . . . . . .  12
       7.2.1.  DSO-IXFR Message  . . . . . . . . . . . . . . . . . .  13
       7.2.2.  Fallback to AXFR  . . . . . . . . . . . . . . . . . .  14
     7.3.  XuD UNSUBSCRIBE-XFR . . . . . . . . . . . . . . . . . . .  15
       7.3.1.  UNSUBSCRIBE-XFR Message . . . . . . . . . . . . . . .  15
     7.4.  Authentication  . . . . . . . . . . . . . . . . . . . . .  17
     7.5.  Multi-primary configurations  . . . . . . . . . . . . . .  17
     7.6.  DNS Stateful Operations TLV Context Summary . . . . . . .  17
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  18
   9.  Implementation Considerations . . . . . . . . . . . . . . . .  18
   10. Implementation Status . . . . . . . . . . . . . . . . . . . .  18
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  19
   12. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  19
   13. Changelog . . . . . . . . . . . . . . . . . . . . . . . . . .  19
   14. References  . . . . . . . . . . . . . . . . . . . . . . . . .  19
     14.1.  Normative References . . . . . . . . . . . . . . . . . .  19
     14.2.  Informative References . . . . . . . . . . . . . . . . .  20
     14.3.  URIs . . . . . . . . . . . . . . . . . . . . . . . . . .  20
Show full document text