DNS Zone Transfer using DNS Stateful Operations

Document Type Expired Internet-Draft (individual)
Authors Han Zhang  , Pallavi Aras  , Willem Toorop  , Sara Dickinson  , Allison Mankin 
Last updated 2020-01-09 (latest revision 2019-07-08)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


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.


Han Zhang (hzhang@salesforce.com)
Pallavi Aras (paras@salesforce.com)
Willem Toorop (willem@nlnetlabs.nl)
Sara Dickinson (sara@sinodun.com)
Allison Mankin (allison.mankin@gmail.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)