Multiple authentication methods on WAX630

Each SSID is can have different security configs and authentiction methods.

From where do you have the idea Netger does suport some kind of 802.1x on a Wi-Fi SSID please, e.g. on ny WAX6xx or the Wi-Fi 7 capble WBE7xx? Start from the basic RT*M plese.

On business networks, you authenticate from a RADIUS server, with some kind of username and password from a directory service usually,

No netger router required.

RADIUS by itself providing no encryption of the traffic, it does protects only a small part of the traffic, most notably the passwords. FMI https://en.wikipedia.org/wiki/RADIUS#Security_2 

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The RADIUS protocol transmits obfuscated passwords using a shared secret and the MD5 hashing algorithm. ... additional protection, such as IPsec tunnels or physically secured data-center networks, should be used ... the user's security credentials are the only part protected by RADIUS itself, ... The RadSec protocol claims to solve aforementioned security issues.

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RadSec is supported e.g. by FreeRADIUS. But to actually use it you of course need to configure it with the necessary certificates (i.e. no "encrypted ... by default") and your (unknown) radius client must support RadSec too. FMI https://en.wikipedia.org/wiki/RadSec 

Haven't seen ny kind of RadSec suport e.g. (but not only) with Netgear. 

Enoug challenges for most network admins me thinks...