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Question for DNS pros
From: Paul Schmehl <pauls () utdallas edu>
Date: Fri, 23 Jul 2004 12:32:28 -0500

Can this be done?

Conditions:
1) You know an IP address that is running a DNS server. (IOW, it responds to digs.)
2) You do not know the hostname or domain of the host.
3) The DNS server does not allow zone transfers.

You want to find out *all* the domains that that DNS server is authoritative for. (Essentially you're trying to find out what's in the named.conf file rather than zone file info.)

Has anyone written a tool that can do this? I thought about the possibility of parsing all the registration sites for the Primary and Backup NS, but that would take forever. I imagine you could write a perl script that would access the web interfaces, do the queries and return the results, but it would run for days...

Paul Schmehl (pauls () utdallas edu)
Adjunct Information Security Officer
The University of Texas at Dallas
AVIEN Founding Member
http://www.utdallas.edu/ir/security/

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