NAC Appliance can be deployed for WLANs as an in-band deployment for full-time endpoint scanning or out-of-band within a central site for periodic scanning to confirm posture compliance. The NAC Appliance server performs authentication, posture assessment, and remediation. The server securely controls authenticated and unauthenticated user traffic by managing traffic policies based on protocol/port or subnet, providing bandwidth policy management based on shared, or per-user bandwidth, or using time-based sessions and heartbeat controls.