On 2012/12/24 (Dec), at 11:46 AM, Matthew Toseland wrote: > We can try to make it a little more difficult based on scarcity of IP > addresses or CAPTCHAs, but this will not add significantly IMHO as both are > fairly cheap.
> We need some source of scarcity that is expensive for an attacker but cheap > for a normal user. Unfortunately it does not exist. I actually know of such a thing, but unfortunately it requires "rewiring the internet" (but not much besides that). I've been toying with the idea of a completely distributed mesh routing project that uses geographic location (instead of assigned ip addresses) to route to locations without a complicated routing table. I have much of the routing theory down, but no simulations yet. With that being said, the scarce resource (in theory) would be location (detectable by network address), because an attacker simulating many nodes would likely have them in a very confined space (like a server closet or a few buildings here-and-there), and could not spoof a wildly different location because it would interfere with routing. -- Robert Hailey P.S. If you know of any seemingly similar geo-routing projects, I'd be interested to know of them.
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