Question about Microsoft ISA Server 2004 (e84-00526) for PC

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ISA 2004 - DHCP + MAC Address

Hello All,

Have not used ISA before now (well not before this morning).

My first task that's been given to me is as follows...

Currently we have a range of IP addresses that are statically assigned to six users.
IP's: thru ~.101
GWay: (n.b. - not the default Gateway)

Currently all of these users are required to input their respective IP details each time they come into the office. And when they leave, they revert back to obtain their IP address automatically.

My query .... Is it possible to configure a DHCP solution where IP/Snet/GWay/LeaseTime assignments are based on MAC address for the above range (or any range) of IP's. This would make their transition connecting to the network each morning much less of a hassle (than it currently is) and seemless.

Hope the above query is explaination enough - I'm new to all of this and "very green" behind the ears one would say.
We are using ISA 2004 V4.


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Re: ISA 2004 - DHCP + MAC Address

This would need to be configured on whatever system it is that is serving DHCP. Assuming it is the same box as ISA Server, it would then have to be running Microsoft DHCP. In Microsoft's DHCP, you can assign reservations for specific MAC addresses. You need to open the DHCP management console, then expand out the server name. If the server name is not listed, you will need to connect to the server hosting the DHCP service by right clicking on the root node, etc.

Assuming you have a connection to the DHCP server and can see the zone you are referring to ( which contains all addresses in the subnet to which you refer), under the zone, right click on Reservations and choose New Reservation. Enter a name, the specific IP address for that machine and the MAC address. That's all there is to it. Next time that machine requests an address from the DHCP server, it will issue the address you configured. It will not issue it to any other machine.

Posted on Jan 23, 2008

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