🌐 Networking

Network Access Control (NAC)

A security function that decides whether a user or device may join a network and what access it receives, enforced by switches, wireless controllers, and VPNs that consult a central policy server such as Cisco ISE. Because every network device trusts its verdicts, the NAC server is one of the most privileged systems in an estate.

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Why a Compromised Network Access Control Server Outranks a Compromised Firewall

A firewall decides what crosses one boundary. A NAC server decides who may exist on the network and what every switch enforces. Root on it is ownership. How to plan for that day.

intermediate 6 min read

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