Network Admission Control

Network Access Control (NAC ) is a technology that supports the defense against viruses and worms out of the network. With NAC devices are checked during authentication on policy compliance. For example, if the virus scanner is not up to date or is missing from the client operating system in the latest security patch, the affected device is quarantined and provided with the latest updates, until it again meets the applicable safety guidelines. Initially, the necessary functions distributed on network components such as routers and switches. On hardened appliances all functionalities can be held also bundled.

Key tasks include: