--On onsdag, onsdag 12 mar 2008 15.01.12 -0400 "Yngve N. Pettersen"
<[EMAIL PROTECTED]> wrote:

> The problem area can possibly be defined as "How do we determine that two
>  host names and/or domains within a specific hirearchy are administrated
> by   the same entity?" .

You are, as others no doubt have told you, hammering shut a square leak
with a round peg. 

The ugly hack answer to your question is to ask for the triplet
nodename-class-some_unallocated_recordtype and check whether the SOA record
returned in the AUTHORITY is identical. (NB: That a "solution" can be
devised as above is by no means an endorsement of this practice)

Now, this information, since it is used in a security verification context,
is useless, even dangerous, without DNSSEC. 

OTOH, with DNSSEC, you can determine this securely, and the methods are a
bit nicer. 

I remain unconvinced, though, that this is a problem best solved by
assuming things about the administrative domain limits that might or might
not correlate with the administrative authority structure of the DNS. 
-- 
Måns Nilsson                     Systems Specialist
+46 70 681 7204   cell                       KTHNOC
+46 8 790 6518  office                  MN1334-RIPE

I'm also pre-POURED pre-MEDITATED and pre-RAPHAELITE!!

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