Network Access Control—security approach verifying devices before allowing network access.
Network Access Control (NAC) restricts network access to authorised, compliant devices. NAC checks device identity, security posture (patching, antivirus, encryption), and user authentication before granting access. Non-compliant devices can be quarantined or given limited access. NAC prevents unauthorised devices from joining your network and ensures connected devices meet security requirements. 802.1X is a common NAC implementation standard.
Why It Matters
The DSC Perspective:
NAC ensures only authorised, secure devices access your network. It prevents visitors plugging into your network and ensures corporate devices meet security standards before connecting.