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Who regulates the RADIUS protocol?

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Answered by GPT-5 mini AI
RADIUS is an IETF standard. The protocol and its extensions are defined and maintained in IETF RFCs (notably RFC 2865 for authentication/authorization, RFC 2866 for accounting, and RFC 2869 for extensions; earlier work includes RFC 2058). IANA maintains the protocol registries (port numbers, attribute numbers, codes, vendor-specific IDs, etc.).

So: the IETF sets the spec; IANA manages the numeric registries.