authorized MAC addresses

Tim Peiffer peiffer at
Tue Jun 6 18:19:51 UTC 2006

I wrote the initial mac registration in the ISC 0.99b sometime ago.  Ted 
only agreed to my mods because they were portable;  no good deed goes 
un-punished :-).  Since I wrote wrote in mac registration, alternate 
forms of MAC registration such as netreg have come up. 

Also since then, I have started to rethink the problem and came to the 
conclusion that the job of the DHCP server is to provide addressing 
services, and not to be a form of network admission control.  It is 
difficult/pointless to do admission control once the party is already on 
the network, no?  To that end, investing more effort into standardized 
protocols like 802.1X may provide better admission control and 
revocation of privileges. 

Tim Peiffer
Networking and Telecommunications Services
University of Minnesota

David W. Hankins wrote:
> On Tue, Jun 06, 2006 at 01:37:51PM -0400, Douglas Sterner wrote:
>> I've been googling the archives and the web looking for a way to 
>> accomplish the following:
>> I have three DHCP servers on three seperate WAN segments. I would like to 
>> have a central MAC address server for the allocation of DHCP addresses. If 
>> the MAC is in the database give it an address otherwise give it nothing or 
>> give it another network. Has anyone set this up? We have a problem with 
>> unkown pc's showing up on the network. Using Suse ES9 SP1
> See 'man dhcpd.conf', search forward for the section titled SUBCLASSES.
> The example is what you're asking for.

More information about the dhcp-users mailing list