Network Access Protection

Here's some things that we've read about Network Access Protection

Network Access Protection (NAP) is a new Microsoft technology for controlling network access of a computer host based on the system health of the host It is also able to control access to network resources based on a client computer's identity and compliance with corporate governance policy.

NAP allows network administrators to define granular levels of network access based on who a client is, the groups to which the client belongs, and the degree to which that client is compliant with corporate governance policy. If a client is not compliant, NAP provides a mechanism to automatically bring the client back into compliance and then dynamically increase its level of network access.

Here are some additional information for your reading
Network Access Protection Policies in Windows Server 2008

Network Access Protection Step by Step guides

Windows Server 2008 and Microsoft virtualization blog

Windows Server Administration