Hi Amr,
According to your description, you are configuring windows server 2008 R2 as NAP capable client in DHCP enforcement. Do you mean that you couldnt find security center when you want to turn on security center (domain PCs only), because you are using WSHV
in your NAP deployment?
In Windows 2008 R2, we may open it by the following steps:
Run gpedit.msc; in the local group policy editor panel, select computer configurationAdministrative templateswindows componentssecurity center, then we may
view turn on security center.
Besides, here are some reference about the checklist of configuring NAP enforcement for DHCP:
https://technet.microsoft.com/en-us/library/Cc772356(v=WS.10).aspx
Best Regards,
Anne he