Question
A company's office has publicly accessible meeting rooms equipped with network ports. A recent audit revealed that visitors were able to access the corporate network by plugging personal laptops into open network ports. Which of the following should the company implement to prevent this in the future?
- A. URL filters
- B. VPN
- C. ACLs
- D. NAC Correct
Explanation
Network access control (NAC), for example 802.1X port-based authentication, checks a device and its user before granting network access, so an unknown laptop plugged into a meeting-room port is blocked or placed in a guest network. URL filters control websites users can reach, a VPN encrypts remote connections, and ACLs filter traffic by address and port but do not authenticate devices connecting to a port.
