CASP+ Definitions: NAC List
In cybersecurity, a Network Access Control (NAC) list is a security feature that controls access to a network by allowing or denying access to specific devices or users. It is essentially a list of authorized devices or users that are permitted to access the network and a list of unauthorized devices or users that are blocked from accessing the network.
NAC lists are used by organizations to enforce security policies and ensure that only trusted devices and users can connect to the network. NAC lists can be implemented using a variety of methods, such as MAC address filtering, IP address filtering, or user authentication.
For example, an organization might use a NAC list to only allow devices with known MAC addresses to connect to its network, or to only allow users who have authenticated using a secure login method to access the network. Conversely, the organization might use a NAC list to block devices with unknown MAC addresses or to deny access to users who have failed to authenticate.
Overall, NAC lists are an important security feature that help organizations to control access to their networks, prevent unauthorized access, and maintain the confidentiality, integrity, and availability of their sensitive data and resources.
