Configuring an Active Directory Domain Controller on Windows Server 2008 Core There are times where you may need a domain controller (DC) handy, whether it be for a demo or to isolate your development test environment. With the forthcoming release of Windows Server 2008 you have a new lightweight option to get a domain controller running using the Core installation. If you want to build your own DC using the Core installation of Windows Server 2008 here are the steps: 1. Install [http://technet2.microsoft.com/windowsserver2008/en/library/47a23a74-e13c-46de-8d30-ad0afb1eaffc1033.mspx?mfr=true Windows Server 2008 Core from the installation media] 2. Change your computer name to an easy-to-remember name: [http://technet2.microsoft.com/WindowsServer/en/Library/460e3705-9e5d-4f9b-a139-44341090cfd41033.mspx NetDom] RenameComputer %ComputerName% /NewName:DC 3. Reboot your server to allow the name change to take effect: [http://technet2.microsoft.com/windowsserver/en/library/68a1aa8e-9d4b-420d-9fdc-6988603c07361033.mspx Shutdown] /R /T 0 4. Determine the identifier of your network interface: [http://technet2.microsoft.com/WindowsServer/en/Library/61427fbd-de1f-4c8a-b613-321f7a3cca6a1033.mspx NetSh] Interface IPv4 Show Interfaces 5. Assign a static IP address to your network interface and set the DNS server to the local machine: [http://technet2.microsoft.com/WindowsServer/en/Library/61427fbd-de1f-4c8a-b613-321f7a3cca6a1033.mspx NetSh] Interface IPv4 Set Address Name="2" Source=Static Address=10.0.0.10 Mask=255.255.255.0 Gateway=10.0.0.1 6. Add the Active Directory Domain Services role: [http://technet2.microsoft.com/windowsserver2008/en/library/bcd89659-402d-46fb-8535-8da1feb8d4111033.mspx?mfr=true DCPromo] /InstallDNS:Yes /DNSOnNetwork:No /NewDomain:Forest /ForestLevel:3 /ReplicaOrNewDomain:Domain /NewDomainDNSName:"contoso.local" /DomainNetBIOSName:"CONTOSO" /Password:"p@ssw0rd"/SafeModeAdminPassword:"p@ssw0rd" 7. If you are connected to another network and want to be able to resolve external addresses configure your DNS Server's forwarders: [http://technet2.microsoft.com/windowsserver/en/library/5c497b2e-3387-4ecf-adf5-562045620a961033.mspx?mfr=true DNSCmd] /ResetFowarders 10.0.0.100 With your new domain controller up and running you can now have machines join the domain and manage the objects using the directory services command line tools.