NAC is user-focused network-based access control.
The term "user-focused" implies that users are authenticated and authorized. The policy expressed in the access control part of NAC (the user's authorization) is based on who the user is, as determined by some authentication mechanism such as captive portals, MAC-based authentication, port-based authentication, or third-party authentication.
A second part of the term "user-focused" is the ability to include the user's... Continued
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