Network Admission Control ( NAC )

Day-zero attacks , virus , and worms have become an increasing problem and continue to disrupt business operations . As discussed earlier , the most common issue on modern and open-standard network is the security posture of internal endpoint devices that connect the network . Endpoints that do not comply with established security policies pose a threat and can introduce a security risk into the network . A NAC solution is needed to ensure that an endpoint is complying to predetermined security policies , such as the latest antivirus and operating system patches , thus preventing vulnerable and noncompliant hosts from obtaining network access .