Figure 1-2 Remote Radius Authentication - ZyXEL Communications Vantage RADIUS 50 User Manual

Vantage RADIUS User's Guide
Client usernames and passwords are forwarded from a wireless network to either the local or remote
RADIUS server, which then validates them against its own list. This ensures that only individuals with
valid accounts will be granted network access.
The following gives an overview of how remote RADIUS authentication operates in a network.
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Wireless station A attempts to communicate with D over the wireless network via C.
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C sends a "request identity" message to A for authentication.
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A replies with identity information, including username and password.
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C communicates with Vantage RADIUS (local RADIUS server 1), which checks if the realm of A
belongs to a local user account or a remote user account. If A has a local user account then
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Figure 1-2 Remote RADIUS Authentication

Getting to Know Your Vantage RADIUS