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DHCP + DNS Blocked on New ISA 2006 Install

Hey,

I installed a new network with Domain Controller (Active Directory), DNS and DHCP. It all works well, computers can register to the domain, get their IP adresses from DHCP. Tested, works fine.

I did a clean install of Isa 2006 on the domain controller itself. It blocks DNS + DHCP although I have under System Policies the configuration Enabled for DHCP and DNS.

Under DHCP, under the From tab, the "Internal" is selected which is my IP range of 172.16.0.1 to 172.16.255.254.

My Domain Controller where my ISA 2006 is installed has an ip of 172.16.1.2.

When the computers are trying to get an IP from the DHCP, it gives an error message saying "Unable to contact your DHCP server. Request has timed out."

What am I doing wrong here? Any suggestions?

Thanks...

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jakethecatuk

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Mordillo98

ASKER

Will the problem go away if I setup the ISA 2006 on a different server instead of the Domain Controller, or do I HAVE to setup the ISA with DHCP relay regardless?

SOLUTION

jakethecatuk

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Mordillo98

ASKER

Oups. Maybe I didn't say it right. :)

If I install my ISA 2006 on a different server on the same subnet/ip scheme of my domain controller, do I still have to configure DHCP relay to make this work.

Not removing the ISA itself. ;)

SOLUTION

Keith Alabaster

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Mordillo98

ASKER

Cool. Let me create another Windows 2003 server where only ISA 2006 will be installed, and let you know if the problem got resolved. I'll get back to you within an hour or so.

Tks a lot.

SOLUTION

Keith Alabaster

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Mordillo98

ASKER

Nice. Will do. I'll get back you soon.

Mordillo98

ASKER

As soon as I installed ISA 2006 on a separate Windows 2003 server instead of my Domain Controller, everything started working as it should have been from day one.

Thanks guys.