Dynamic dns and Rogue Clients

[Pete Ehlke]

On Mon, Jun 24, 2002 at 02:04:12PM -0500, Martin McCormick wrote:
> 	We are testing dynamic dns using bind9.2.1 and
> dhcpd-3.0.1RC9.  Everything works as advertised which brings me
> to the problem.
> 
> 	We deliberately set two Windows systems to use the same
> net-bios name in the same default TCP/IP domain so their names
> would be duplicates.
> 
> 	The first system booted and got registered with a proper
> forward and reverse record in DNS.  The second system got what we
> really don't like to see at all, namely a working TCP/IP stack,
> an IP number from the dhcp server, but no dns records of any
> kind.
> 
Don't let your ddns clients pick their own dns hostnames. You should be
in control of your namespace, not your students.

-P.