NAC: Balancing security and the user experience
While network access control (NAC) is one of the most talked-about network security topics, the NAC label itself is now applied to so broad a range of security solutions that it is practically meaningless—as vague as the term security itself. Fortunately, there is a common set of important security functions at the heart of most NAC solutions which everyone agrees is network admission control, the subject of this article. I refer to it here as small NAC (sNAC) as its scope is narrower: it enables authenticated users to access specific parts of a network based on the identity and security posture of their devices and helps them correct detected compliance problems.
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