Re: DHCP server authorization - how does it work?
From: Herb Martin (news_at_LearnQuick.com)
Date: 01/22/05
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Date: Sat, 22 Jan 2005 00:00:51 -0600
"David" <David@discussions.microsoft.com> wrote in message
news:8E2EB475-42C9-4028-892A-AEF4AC92CB7E@microsoft.com...
> In an AD environment, a DHCP server must be authorized before giving out
> leases. But *how* is it enforced? I suspect there is some interaction
between
> the network stack and domain controllers, but I am not sure. Any
information
> is appreciated.
Two ways: One member servers check for the list at
the DC, and those (DHCP servers) who recognize that
authorization is invoked (by the domain having the list)
send out DHCP_INFORM message which non-Domain
Win2000+ DHCP servers will respect IF they receive
them (which usually means if they are on the same subnet
since it is a broadcast.)
[I had previously thought it might be a multicast.]
Google: [ dhcp authorization domain site:microsoft.com ]
<
http://www.microsoft.com/resources/documentation/WindowsServ/2003/standard/proddocs/en-us/Default.asp?url=/resources/documentation/WindowsServ/2003/standard/proddocs/en-us/sag_dhcp_imp_authorizingservers.asp >
-- Herb Martin
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