A blueprint for introducing disruptive technology into the Internet
ACM SIGCOMM Computer Communication Review
A Burst-Level Priority Scheme for Bursty Traffic in ATM Networks
IC3N '97 Proceedings of the 6th International Conference on Computer Communications and Networks
Tor: the second-generation onion router
SSYM'04 Proceedings of the 13th conference on USENIX Security Symposium - Volume 13
Shining Light in Dark Places: Understanding the Tor Network
PETS '08 Proceedings of the 8th international symposium on Privacy Enhancing Technologies
Sampled traffic analysis by internet-exchange-level adversaries
PET'07 Proceedings of the 7th international conference on Privacy enhancing technologies
A practical congestion attack on tor using long paths
SSYM'09 Proceedings of the 18th conference on USENIX security symposium
Improving tor using a TCP-over-DTLS tunnel
SSYM'09 Proceedings of the 18th conference on USENIX security symposium
ExperimenTor: a testbed for safe and realistic tor experimentation
CSET'11 Proceedings of the 4th conference on Cyber security experimentation and test
DefenestraTor: throwing out windows in Tor
PETS'11 Proceedings of the 11th international conference on Privacy enhancing technologies
Proceedings of the 27th Annual Computer Security Applications Conference
Throttling Tor bandwidth parasites
Security'12 Proceedings of the 21st USENIX conference on Security symposium
Methodically modeling the Tor network
CSET'12 Proceedings of the 5th USENIX conference on Cyber Security Experimentation and Test
Torchestra: reducing interactive traffic delays over tor
Proceedings of the 2012 ACM workshop on Privacy in the electronic society
Enhancing Tor's performance using real-time traffic classification
Proceedings of the 2012 ACM conference on Computer and communications security
How (not) to build a transport layer for anonymity overlays
ACM SIGMETRICS Performance Evaluation Review
POSTER: PnP: improving web browsing performance over tor using web resource prefetch-and-push
Proceedings of the 2013 ACM SIGSAC conference on Computer & communications security
PCTCP: per-circuit TCP-over-IPsec transport for anonymous communication overlay networks
Proceedings of the 2013 ACM SIGSAC conference on Computer & communications security
Please slow down!: the impact on tor performance from mobility
Proceedings of the Third ACM workshop on Security and privacy in smartphones & mobile devices
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Tor is a popular anonymity-preserving network, consisting of routers run by volunteers all around the world. It protects Internet users' privacy by relaying their network traffic through a series of routers, thus concealing the linkage between the sender and the recipient. Despite the advantage of Tor's anonymizing capabilities, it also brings extra latency, which discourages more users from joining the network. One of the factors that causes the latency lies in Tor's circuit scheduling algorithm, which allows busy circuits (those with continuous traffic) to crowd out bursty circuits (those with short bursts of traffic). In this work, we propose and implement a more advanced scheduling algorithm which treats circuits differently, based on their recent activity. In this way, bursty circuits such as those used for web browsing can gain higher priority over busy ones such as used for bulk transfer; the performance for most activities over Tor is improved, while minimal overhead is incurred. Our algorithm has been incorporated into the latest build of Tor.