Blocking-Resistant Network Services using Unblock
نویسندگان
چکیده
The desire for uncensored access to the Internet has motivated the development of both open proxies like Tor and social graph-based overlays like FreeNet. However, neither design is sufficient, as relays in open proxies are easily exposed and blocked, and overlays based just on social trust suffer from poor availability and performance. In this paper, we introduce the design for a new overlay service, Unblock, constructed from an augmented social graph. In Unblock, multi-hop paths through social links protect individual participants from exposure to adversaries. Unblock achieves good performance by introducing additional links in the network graph in a manner that minimizes vulnerability. We analyze appropriate transport level techniques for such an overlay, and demonstrate the practicality of the system for web traffic.
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