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?