network access control - Computer Definition
An umbrella term for managing access to a network. Network access control (NAC) authenticates users logging into the network and determines what they can see and do. It also examines the health of the user's computer or mobile device (the endpoints). Network access control can be implemented with multiple software components or via an integrated package, the latter typically more specialized in one of the functions rather than all of them. See authentication, access control, endpoint security and network access server.