Sure: RADIUS is the protocol to authenticate users and / or endpoints that is clear-text by nature. Passwords are hashed using a rather old method. Of course, it's not the best choice when this traffic is being transported over the internet. RADSEC is a way to build an encrypted communication channel between your network devices and the Meraki cloud so it strengthens your security posture. https://documentation.meraki.com/MR/Encryption_and_Authentication/MR_RADSec
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