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Glossary: Endpoint, Application and Email Security

802.1X

Also written: eight-oh-two-dot-one-X, port-based network access control

An IEEE standard that keeps a switch port or Wi-Fi connection closed until the device proves who it is to an authentication server, almost always RADIUS. Alex uses it so a stranger's laptop plugged into a meeting-room socket can't reach the order server.

Where the book teaches it

Related terms

supplicantauthenticatorauthentication serverRADIUS (Remote Authentication Dial-In User Service)EAP (Extensible Authentication Protocol)NAC (network access control)