DHCP

Request from a DHCP server takes place during the bootup process way before authentication of users. So, unless someone knows something I don't, my answer would be no.

George

The only way I know of to do this is to set up reservations for each of the computers on your network. Then set your DHCP scope to cover only the range of addresses assigned as reservations. What this does in effect is give all your computers static addresses (in the sense that they don't change), while stilling allowing you the benefits of DHCP (providing all DNS information from a central location). Since a reservation is tied to a specific MAC address, the chances of users not belonging to your domain getting a DHCP-assigned IP address is greatly diminished (I won't say alleviates the possibility because MAC addresses can be cloned. However, it takes a very determined (and knowledable) user to go to these extremes.).

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