Dynamic Scheduling DDoS Signature Detection
Multi-cloud Network Management Multi-cloud Route Characterization Unraveling the Cloud Peering Fabric
Optics-based DDoS Defenses DDoS Signature Detection Climate Change Risks to Networks Colocation View of Internet Routes
Multi-task Weak Supervision De-noising Delay Measurements Forecasting Network Streams Application Behavior Modeling
Metro Fiber Characterization IPv6 Alias Resolution Mapping Internet Interconnections IPv6 Topology Discovery Geography of Eyeball ASes
Traffic Localization Web Complexity
BONSAI
Predicting Mental Health Incentivized Reviews Coarse View of Graphs
PRIME Mesh vs Multiple Trees ISP-Friendly Contribution Awareness Dissecting Performance Overlay Monitoring
Unbiased Sampling Peer Dynamics (Churn) DHT Lookup Performance Tsunami, A DHT Botnet Shared Files Monitoring DHT Traffic Overlay Topology Impact on [AS] Underlay
Publisher Behavior Peer-Level Performance Assessing Scalability

Swarming Content Delivery

Publisher Behavior

Investigating the Reaction of BitTorrent Content Publishers to Antipiracy Actions

This study examines the impact of two major antipiracy actions, the closure of Megaupload and the implementation of the French antipiracy law, on publishers in the largest BitTorrent portal who are major providers of copyrighted content online.

During recent years, a few countries have put in place online antipiracy laws and there has been some major enforcement actions against violators. This raises the question that to what extent antipiracy actions have been effective in deterring online piracy? This is a challenging issue to explore because of the difficulty to capture user behavior, and to identify the subtle effect of various underlying (and potentially opposing) causes. In this paper, we tackle this question by examining the impact of two major antipiracy actions, the closure of Megaupload and the implementation of the French antipiracy law, on publishers in the largest BitTorrent portal who are major providers of copyrighted content online. We capture snapshots of BitTorrent publishers at proper times relative to the targeted antipiracy event and use the trends in the number and the level of activity of these publishers to assess their reaction to these events. Our investigation illustrates the importance of examining the impact of antipiracy events on different groups of publishers and provides valuable insights on the effect of selected major antipiracy actions on publishers’ behavior.

Publications

  • Investigating the Reaction of BitTorrent Content Publishers to Antipiracy Actions
    Reza Farahbaksh, Angel Cuevas, Ruben Cuevas, Reza Rejaie, Michal Kryczka, Roberto Gonzalez, Noel Crespi
    IEEE P2P, Trento, Italy, September 2013 [acceptance rate 20%]
    [PAPER] [PPT]

Team

  • Reza Farahbaksh (Télécom SudParis)
  • Angel Cuevas (UC3M)
  • Ruben Cuevas (UC3M)
  • Michal Kryczka (IMDEA)
  • Roberto Gonzalez(UC3M)
  • Noel Crespi (Télécom SudParis)
  • Reza Rejaie

Funding

This project is in part funded by the National Science Foundation (NSF) grant no. IIS-0917381. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

Peer-Level Performance

Assessing Peer-Level Performance Among BitTorrent Clients

This measurement study examines the uniformity of observed performance and underlying causes among BitTorrent clients.

The observed performance by individual peers in BitTorrent can be simply measured by their average down- load rate. While it is often stated that the observed peer-level performance by BitTorrent clients is high, it is difficult to accurately verify this claim due to the large scale, distributed and dynamic nature of this P2P system. To provide a “representative” characterization of peer-level performance in BitTorrent, the following two important questions should be addressed: (i) What is the distribution of observed performance among participating peers in a torrent? (ii) What are the primary peer- or group-level properties that determine observed performance by individual peers? In this paper, we conduct a measurement study to tackle these two questions. Toward this end, we derive observed performance for nearly all participating peers along with their main peer- and (peer-view of) group-level properties in three different torrents. Our results show that the probability of experiencing certain level of performance has a roughly uniform distribution across the entire range of observed values. Furthermore, while the performance of each peer has the highest correlation with its outgoing bandwidth, there is no dominant peer- and group-level property that primarily determines the observed performance by the majority of peers.

Publications

  • Understanding Peer-Level Performance in BitTorrent: A Measurement Study
    Amir H. Rasti, Reza Rejaie
    Proceedings of 16th International Conference on Computer Communications and Networks (ICCCN), one of the Chairs Recommended Papers, Honolulu, Hawaii, August 2007 [acceptance rate 29%]
    [PAPER] [PPT]

Team

  • Amir H. Rasti
  • Reza Rejaie

Assessing Scalability

Exploring the Scalability of Swarming Peer-to-Peer Content Delivery

This simulation study systematically evaluates the scalability of swarming peer-to-peer content delivery.

Most web sites are unable to serve content to a large num- ber of users due to the inherent limitations of client-server file transfer. Recent peer-to-peer content delivery protocols have demonstrated the feasibility of spreading this load among the clients themselves, giving small web sites the possibility of serving large audiences with very low cost. In this studywe use a simulation-based performance evaluation to study the fundamental question of the scalability of swarming peer-to- peer content delivery. Our results demonstrate the superior scalability of swarming with respect to load, file size, block size, and client bandwidth.

Publications

  • The Scalability of Swarming Peer-to-Peer Content Delivery
    Daniel Stutzbach, Daniel Zappala, Reza Rejaie
    Proceedings of Networking, pp. 15-26, Waterloo Ontario Canada, May 2005 [acceptance rate 25% of 430]
    [PAPER] [PPT]

Team

  • Daniel Stutzbach
  • Daniel Zappala
  • Reza Rejaie