TopicIT Networking →
Simple definition
802.1X controls access to the network before allowing a station or user.
Technical definition
The protocol is based on a supplicator, a porter and an authentication server, often RADIUS, to manage access control.
What is it used for?
authenticate users or machines on Ethernet ports and Wi-Fi The Commission has been working on the following proposals:
Practical example
one switch requests EAP authentication before opening access to VLAN Internally.
Common issues
- certificate expired
- RADIUS inaccessible
- incompatible PEF method
Key takeaway: Always adapt the diagnosis to the product version and the architecture actually deployed.