A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : DNS Extension for SRV-Client Address Authorization (SRV-CAA)
Author(s) : D. Otis
Filename : draft-dougotis-srv-caa-00.txt
Pages : 9
Date : 2004-5-17
Typical use of DNS records enables resolving a server address, but
this record extension authorizes clients to initiate a specific
protocol. This document simply extends definitions for fields of a
DNS SRV record as defined in [RFC2782] and appends '_c' to the label
in the Proto field. This extension enables administrative control of
a domain referenced by a client as it enables verification of
permitted client addresses. This record extension is useful to
authorize a client for a specific protocol and possibly useful for
confirming veracity of a return path also referenced by a client.
Although an in-addr.arpa IP address reverse DNS query may assert a
domain, the domain referenced within client identification may be an
alias and thus not match. In addition, specific protocol
authorization for the client can not be deduced and reverse DNS
information is optional, typically administered separately or not
delegated, and thus often providing information of limited value.
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