The simplest way to achieve that is to use Radius authentication. You can have either your Windows server use Radius or if you have another Linux box you could maybe use FreeRadius. Hope this gets you started.
Routing and Bridging Firewall Solutions
The simplest way to achieve that is to use Radius authentication. You can have either your Windows server use Radius or if you have another Linux box you could maybe use FreeRadius. Hope this gets you started.