Network Access Protection (NAP) is a platform that network administrators can use to help protect the security of a network.

When you connect to a corporate network that uses NAP, your computer is checked to make sure that it has the required software and settings, and that the software and settings are up to date. If anything is missing or outdated, your computer can be automatically updated. Your network access might be limited during that time, but usually this process happens quickly, after which full network access is restored.