Need to prevent SBS 2003 disabling its DHCP server if it sees another DHCP server on network

dhcp-serverwindows-sbs-2003

The DHCP server on our SBS 2003 server shuts itself down automatically after a couple of hours of having a Hamachi gateway running on the same LAN.

Event ID 1053

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The server incorrectly assumes that Hamachi might start assigning DHCPs to other clients on the LAN.

While the Hamachi gateway client does indeed have a DHCP server, it only assigns IPs to computers making inbound VPN connections- not to PCs on the LAN.

Does anyone know of a way to override this behaviour on SBS 2003? Perhaps a registry hack?

I know the server has good intentions when it disables its DHCP server in this situation… however, in avoiding a non-existent problem, it is actually creating a real problem.

Best Answer

IF you really want to you can disable rogue DHCP server detection by setting the REG_DWORD value DisableRogueDetection to 1 under HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\DHCPServer\Parameters.

As an aside: It kinda sounds like you installed the Hamachi adapter directly on the Windows SBS 2003 computer. If that's the case then you're probably going to have issues with a multi-homed domain controller to start worrying about.

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For an 11-user deployment, I think you're giving yourself an unnecessarily hard time trying to migrate them piecemeal. Try the new system on a sub-domain and take the decision on whether you are going to use it, then just cut all 11 users over to the new system in one hit.

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A brief Google search gives what you need:

https://web.archive.org/web/20160619070432/http://www.bridgetonova.com:80/2007/11/how-to-lock-computers-when-idle-by-using-gpo.html

Update:

The idea is that you are enabling the screensaver option, but instead of specifying a real screensaver, you just make Windows execute the following command:

%windir%\system32\rundll32.exe user32.dll,LockWorkStation

This only locks the workstation without actually launching a screensaver.

Check the link for more detailed info.

Best Answer

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