MicroNugget: How to Use 802.1X and NAC

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In this video, Keith Barker covers access control methods like MAC address filtering, 802.1x, and captive portals. These and other functions and features enable us to stop an individual on a network and validate their identity before letting them continue to the network resources.

If you've ever tried to access free WiFi at a hotel or coffeeshop and been greeted with a pop-up asking you to provide your room number or to agree to a user agreement before getting Internet access, you've encountered 802.1x.

Just like you don't let someone enter your living room without first knocking and introducing themselves, 802.1x provides a number of opportunities to find out who a user is before giving them access to anything on the network.

It can be beefed up with two-factor authentication (2FA), or extended with features like Network Access Control that grants users access only to pre-approved resources even once they're on the network.

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