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DNS Extended Service Discovery (ESRV) Record.

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Phillip Hallam-Baker , Brian Smith
Last updated 2011-03-09
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


General Service Description (GSRV) and Extended Service Description records are DNS Resource Records that provide information to applications attempting to establish a network connection. When authenticated using an appropriate means GSRV and ESRV records may be used to prevent a downgrade attack in cases where use of security enhancements with an application protocol are optional.


Phillip Hallam-Baker
Brian Smith

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