Allied Telesis AT-WA7400/EU - Manual (Page 230)

Appendix B: Configuring Security on Wireless Clients
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5. Verify that you configured the AT-WA7400 Wireless Access Point to
use IEEE 802.1x security mode with an external RADIUS server, as
shown in Figure 9.
Figure 9. Security Settings Page
6. Then configure IEEE 802.1x security with certificate authentication on
each client as follows (Figure 10).