There are two ways of looking at Access Control. One is easy, with a direct relation to the resources being managed. The other is advanced, but like putty in the hands of administrators; moreover, it is highly efficient. Efficiency matters; it allows us to enforce access control everywhere, with no experienced discomfort. We derive the efficient model from the one that is easy to use.
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Our work on Identity is ultimately for controlling access to online services. We now introduce our thoughts on Access Control. The whole story is complex, but an analogy to the phone system can help to explain it.
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The essential game of Realm Crossover is one of juggling realms as part of identities. This brings us a number of "support levels" that we could describe. This forms an interesting perspective on the growing path of the InternetWide Architecture.
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The predictable future arrival of Quantum Computers is problematic at the present time, and especially encryption protocols need attention. How can you use your VPN in a Quantum Proof manner?
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For client-server networking, NAT traversal is a solved problem. For peer-to-peer networks it is not possible to do in general, but the potential of these networks in the liberation of users from "central" services is quite big. The 6bed4 tunnel allows applications to be designed as peer-to-peer IPv6 applications with only a fallback (to your own tunnel server) if necessary.
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