|The Unix and Internet Fundamentals HOWTO, by Eric Raymond|
|AS-awareness in Tor Path Selection||Search for a title, author or keyword|
AS-awareness in Tor Path Selection
PDF document, by Matthew Edman and Paul Syverson. Tor is an anonymous communications network with thousands of router nodes worldwide. An intuition reflected in much of the literature on anonymous communications is that, as an anonymity network grows, it becomes more secure against a given observer because the observer will see less of the network. In particular, as the Tor network grows from volunteers operating relays all over the world, it becomes less and less likely for a single autonomous system (AS) to be able to observe both ends of an anonymous connection. Yet, as the network continues to grow significantly, no analysis has been done to determine if this intuition is correct. Further, modifications to Tor’s path selection algorithm to help clients avoid an AS-level observer have not been proposed and analyzed.
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