Networking

Enhancing Tor's Performance Using Real-Time Traffic Classification

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Executive Summary

Tor is a low-latency anonymity-preserving network that enables its users to protect their privacy online. It consists of volunteer-operated routers from all around the world that serve hundreds of thousands of users every day. Due to congestion and a low relay-to-client ratio, Tor suffers from performance issues that can potentially discourage its wider adoption, and result in an overall weaker anonymity to all users. The authors seek to improve the performance of Tor by defining different classes of service for its traffic. They recognize that although the majority of Tor traffic is interactive web browsing, a relatively small amount of bulk downloading consumes an unfair amount of Tor's scarce bandwidth.

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