The work you're referring to involves forwarding requests between RADIUS
servers using public key encryption. It's definitely an antidote for the
problem of naieve implementations forwarding raw, insecure RADIUS protocol
messages across the Internet, but doesn't resolve the problem at the
NAS->AAAS level.
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Thomas Ptacek at EnterAct, L.L.C., Chicago, IL [tqbf@enteract.com]
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"If you're so special, why aren't you dead?"