Network access control (NAC)

If you have a Windows desktop or laptop and you go away on holiday for 2-3 weeks, when you come back your device may need multiple updates. After a remote client has authenticated NAC, it then checks that the device being used is fully patched. See Figure 18:

Figure 18: NAC

When the user is authenticated, the health authority (HAuth) checks against the registry of the client device to ensure that it is fully patched. A fully patched machine is deemed compliant and allowed access to the LAN. In the preceding diagram, Laptop 2 is compliant. If the device is not fully patched, it is deemed noncompliant and is redirected ...

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