Access control is more than just checking devices for malware before admitting them to a network. Identity-based network access control (NAC) looks at the identities of users and devices, and knows what resource they are authorized to access, allowing enterprises to tightly control access, and the devices and behavior of users.
what is identity management
wireless LAN? Resources - What is the user trying to access Keep in mind that access decisions are neither one-time nor static in nature. As attributes change (strength of authentication, location, device), so should the policy. For example, a contractor can be prevented from accessing the network from his/her personal machine from their network at home during the day. But the nature of the project may require that contractor to work from home for only the next two days, which should be easily changed