Network Access Control Appliance secures again threats inside and outside the network but remains a simple accurate, scalable and secure appliance whilst maintaining TCO effectively. Controlling access and protecting against broad threats with application based and identity based technologies that manage who have access to your specific critical network resources.

NAC Appliances controls guest and contractor access and offers in-line identity and application based network access control
NAC software support managed users and offers employee endpoint health assessment and local access control
NAC Module for NIPS supports guest access by combining NAC and NIPs together

Note: This is based on McAfee technology