This episode focuses on the Network Admission Control (NAC) appliance, with special guest Nevin Absher from the Cisco AAA TAC Team in RTP, NC. The discussion starts with a basic introduction to how network administrators can use the NAC appliance to control access to the network in various deployment scenarios. The discussion then moves to NAC deployment and operation best practices as well as specific issues that some administrators encounter when deploying the solution, and how to avoid them. NAC troubleshooting methodologies and techniques are also discussed.