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This seems like an obvious question, but I can't easily find a clear answer.
I'm setting up a FreeRADIUS server on my LAN just for curiosity's sake, but I want to know if the packets are encrypted at all by default, and, if so, how?
I know requests are sent with a shared secret that acts as a password. I would hope that even by default some form of encryption is applied to keep that safe over the wire.