Definition
Network Access Control (NAC) protects a private network by restricting access to unauthorized devices and users. Some standard methods of implementing NAC include multi-factor authentication (MFA) and biometric verification.
Applications of Network Access Control
- Remote Work: NAC enables remote employees to access and connect to the corporate network with their devices.
- BYOD (Bring Your Own Device): NAC allows employees to bring and use their own devices to work.
- Temporary network access: NAC policies enable non-employees to access network resources temporarily. Partners and contractors can use the network without going through complicated authentication procedures.
Advantages of Network Access Control
- Enhanced visibility: NAC can help network administrators see who accesses and uses it.
- Improved Security: NAC enhances protection against data theft by limiting unauthorized access to a network.
- Guest Management: NAC policies can limit temporary network access to guests.
Types of Network Access Control
- Pre-admission control: This type of NAC happens before users or devices are allowed onto the network. It verifies identity and ensures compliance before granting access.
- Post-admission control: After initial access is granted, post-admission NAC may require users or devices to re-authenticate when moving to different areas or accessing new resources within the network.