Source: https://www.inspire.edu.gr/
Timestamp: 2019-04-18 12:22:55+00:00

Document:
We collect and analyze data, like network topologies and traffic traces, to better understand various facets of the Internet ecosystem, like the behaviour of malware, the exhaustion of IP addresses, and the interconnections between Internet Service Providers (ISPs).
We study how to exploit the rapidly emerging SDN paradigm to counter chronic problems of the Internet, including unpredictable network availability, lack of Quality of Service guarantees, and vulnerability to established and new types of Denial of Service (DoS) attacks.
We design and build sophisticated network monitoring systems for efficiently processing, storing, and querying big network data, like traffic traces collected at line rates of 10Gbps and above.
Eyeball-Jedi: A tool that measures interconnectivity between the networks with the largest user populations in a given country.
Interested to do research on the Internet?
We always look for highly-skilled individuals to join us.
A. Milolidakis, R. Fontugne, and X. Dimitropoulos, “Detecting Network Disruptions At Colocation Facilities,” in IEEE INFOCOM, 2019.
S. Kastanakis, P. Sermpezis, V. Kotronis, and X. Dimitropoulos, “CABaRet: Leveraging Recommendation Systems for Mobile Edge Caching,” in ACM SIGCOMM Workshop on Mobile Edge Communications (MECOMM ’18), 2018.
G. Nomikos, V. Kotronis, P. Sermpezis, P. Gigis, L. Manassakis, C. Dietzel, S. Konstantaras, X. Dimitropoulos, and V. Giotsas, “O Peer, Where Art Thou? Uncovering Remote Peering Interconnections at IXPs,” in ACM Internet Measurement Conference (IMC ’18), 2018.
V. Kotronis, G. Nomikos, L. Manassakis, D. Mavrommatis, and X. Dimitropoulos, “Shortcuts through Colocation Facilities,” in ACM Internet Measurement Conference (IMC ’17), 2017.
E. Lakiotakis, C. Liaskos, and X. Dimitropoulos, “Application-Network Collaboration using SDN for Ultra-Low Delay Teleorchestras.,” in IEEE ISCC PEDISWESA Workshop, 2017.
P. Sermpezis and X. Dimitropoulos, “Can SDN Accelerate BGP Convergence? A Performance Analysis of Inter-domain Routing Centralization,” in 16th International IFIP TC6 Networking Conference, Networking 2017, 2017.
P. Sermpezis, G. Nomikos, and X. Dimitropoulos, “Re-mapping the Internet: Bring the IXPs into Play,” in IEEE NetSciCom workshop (INFOCOM workshops), 2017.
T. D. Assefa, R. Hoque, E. Tragos, and X. Dimitropoulos, “SDN-based local mobility management with X2-interface in femtocell networks,” in IEEE Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD), 2017.
C. Liaskos, V. Kontronis, and X. Dimitropoulos, “A Novel Framework for Modeling and Mitigating Distributed Link Flooding Attacks,” in IEEE INFOCOM, 2016.
G. Nomikos and X. Dimitropoulos, “traIXroute: Detecting IXPs in traceroute paths,” in Passive and Active Measurement (PAM), 2016.
V. Kotronis, R. Kloeti, M. Rost, P. Georgopoulos, B. Ager, S. Schmidt, and X. Dimitropoulos, “Stitching Inter-Domain Paths over IXPs,” in 2nd Symposium on SDN Research (SOSR 2016), 2016.
S. Baleato, N. Weidmann, P. Gigis, X. Dimitropoulos, E. Glatz, and B. Trammell, “Transparent Estimation of Internet Penetration from Network Observations,” in Springer Passive and Active Measurement Conference (PAM), 2015.
R. Kloti, V. Kotronis, B. Ager, and X. Dimitropoulos, “Policy-Compliant Path Diversity and Bisection Bandwidth,” in IEEE INFOCOM, 2015.
C. Liaskos, “A Lightweight, Non-Intrusive Approach for Orchestrating Autonomously-Managed Network Elements,” in IEEE ISCC, 2015.
M. Djatmiko, D. Schatzmann, A. Friedman, X. Dimitropoulos, and R. Boreli, “Federated Flow-Based Approach for Privacy Preserving Connectivity Tracking,” in ACM SIGCOMM CoNext, 2013.
F. Fusco, M. Vlachos, X. Dimitropoulos, and L. Deri, “Indexing Million Of Packets Per Second Using GPUs,” in ACM SIGCOMM Internet Measurement Conference (IMC), 2013.
E. Raftopoulos and X. Dimitropoulos, “Understanding Network Forensics Analysis in an Operational Environment,” in IEEE Security & Privacy Symposium Workshop on Cyber Crime, 2013.
A. Abdelkefi, Y. Jiang, and X. Dimitropoulos, “K-Sparse Approximation for Traffic Histogram Dimensionality Reduction,” in International Conference on Network and Service Management (CNSM), 2012.
F. Fusco, M. Vlachos, and X. Dimitropoulos, “RasterZIP: Compressing Network Monitoring Data with Support for Partial Decompression,” in ACM SIGCOMM Internet Measurement Conference (IMC), 2012.
E. Glatz and X. Dimitropoulos, “Classifying Internet One-way Traffic,” in ACM SIGCOMM Internet Measurement Conference (IMC), 2012.
E. Glatz, S. Mavromatidis, B. Ager, and X. Dimitropoulos, “Visualizing Big Network Traffic Data using Frequent Pattern Mining and Hypergraphs,” in IMC Workshop on Internet Visualization, 2012.
V. Kotronis, X. Dimitropoulos, and B. Ager, “Outsourcing the routing control logic: better Internet routing based on SDN principles,” in ACM Hot Topics in Networks (HotNets), 2012.
I. Paredes-Oliva, I. Castell-Uroz, P. Barlet-Ros, X. Dimitropoulos, and J. Sole-Pareta, “Practical Anomaly Detection based on Classifying Frequent Traffic Patterns,” in IEEE Global Internet Symposium, 2012.
E. Raftopoulos and X. Dimitropoulos, “Shedding Light on Log Correlation in Network Forensics Analysis,” in International Conference on Detection of Intrusions and Malware, and Vulnerability Assessment (DIMVA), 2012.
E. Raftopoulos and X. Dimitropoulos, “Detecting, Validating and Characterizing Computer Infections in the Wild,” in ACM SIGCOMM Internet Measurement Conference (IMC), 2011.
M. Burkhart and X. Dimitropoulos, “Fast Privacy-Preserving Top-k Queries using Secret Sharing (invited),” in IEEE International Conference on Computer Communication and Networks (ICCCN), 2010.
M. Burkhart, M. Strasser, D. Many, and X. Dimitropoulos, “SEPIA: Privacy-Preserving Aggregation of Multi-Domain Network Events and Statistics,” in USENIX Security Symposium, 2010.
D. Schatzmann, W. Mulbauer, T. Spyropoulos, and X. Dimitropoulos, “Digging into HTTPS: Flow-Based Classification of Webmail Traffic,” in ACM SIGCOMM Internet Measurement Conference (IMC), 2010.
D. Brauckhoff, X. Dimitropoulos, A. Wagner, and K. Salamatian, “Anomaly Extraction in Backbone Networks using Association Rules,” in ACM SIGCOMM Internet Measurement Conference (IMC), 2009.
X. Dimitropoulos, P. Hurley, A. Kind, and M. Stoecklin, “On the 95-percentile Billing Method,” in Springer Passive and Active Measurement Conference (PAM), 2009.
D. Dechouniotis, X. Dimitropoulos, A. Kind, and S. Denazis, “Dependency Detection Using a Fuzzy Inference Engine,” in IFIP/IEEE International Workshop on Distributed Systems, Operations and Management (DSOM), 2007.
X. Dimitropoulos, D. Krioukov, G. Riley, and K. Claffy, “Revealing the Autonomous System Taxonomy: The Machine Learning Approach,” in Springer Passive and Active Measurement Conference (PAM), 2006.
X. Dimitropoulos and G. Riley, “Modeling Autonomous-Systems Relationships,” in IEEE/ACM/SCS Principles of Advanced and Distributed Simulations (PADS), 2006.
X. Dimitropoulos, D. Krioukov, B. Huffaker, K. Claffy, and G. Riley, “Inferring AS Relationships: Dead End or Lively Beginning?,” in Springer Workshop on Experimental Algorithms (WEA), 2005.
X. Dimitropoulos, D. Krioukov, and G. Riley, “Revisiting Internet AS-Level Topology Discovery,” in Springer Passive and Active Measurement Conference (PAM), 2005.
X. Dimitropoulos and G. Riley, “Large-scale Simulation Models of BGP,” in IEEE Conference on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS), 2004.
J. Kim, S. Ko, D. Nicol, X. Dimitropoulos, and G. Riley, “A BGP attack against traffic engineering,” in IEEE/ACM/SCS Winter Simulation Conference (WSC), 2004.
X. Dimitropoulos and G. Riley, “Creating Realistic BGP Models,” in IEEE Conference on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS), 2003.
E. Raftopoulos, E. Glatz, X. Dimitropoulos, and A. Dainotti, “How Dangerous is Internet Scanning? A Measurement Study of the Aftermath of an Internet-wide Scan,” in Springer Traffic Monitoring and Analysi, .
E. Lakiotakis, C. Liaskos, and X. Dimitropoulos, “Enabling Ultra-Low Delay Teleorchestras using Software-Defined Networking,” in Conext’17 (Student workshop), 2017, p. 1–3.
P. Gigis, V. Kotronis, E. Aben, S. D. Strowes, and X. Dimitropoulos, “Characterizing User-to-User Connectivity with RIPE Atlas,” in Applied Networking Research Workshop (ANRW ’17), 2017.
T. D. Assefa, R. Hoque, E. Tragos, and X. Dimitropoulos, “Poster Abstract: SDN-based Handover Managementin Enterprise Networked Femtocells with X2-Forwarding Scheme,” in IEEE INFOCOM 2017 workshop session, 2017.
G. Chaviaras, P. Gigis, P. Sermpezis, and X. Dimitropoulos, “ARTEMIS: Real-Time Detection and Automatic Mitigation for BGP Prefix Hijacking (demo),” in ACM SIGCOMM, 2016.
P. Sermpezis and X. Dimitropoulos, “Inter-domain SDN: Analysing the Effects of Routing Centralization on BGP Convergence Time,” in MAMA workshop (ACM SIGMETRICS), 2016.
V. Kotronis, R. Kloti, M. Rost, P. Georgopoulos, B. Ager, S. Schmid, and (. X. Dimitropoulos, “Investigating the Potential of the Inter-IXP Multigraph for the Provisioning of Guaranteed End-to-End Services,” in ACM SIGMETRICS, 2015.
A. Gamperli, V. Kotronis, and X. Dimitropoulos, “Evaluating the Effect of Centralization on Routing Convergence on a Hybrid BGP-SDN Emulation Framework (demo),” in ACM SIGCOMM, 2014.
V. Kotronis, X. Dimitropoulos, R. Kloti, B. Ager, P. Georgopoulos, and S. Schmid, “Control Exchange Points: Providing QoS-enabled End-to-End Services via SDN-based Inter-domain Routing Orchestration,” in Open Networking Summit (ONS), 2014.
V. Kotronis, X. Dimitropoulos, and B. Ager, “Outsourcing Routing using SDN: The Case for a Multi-domain Routing Operating System (poster),” in Open Networking Summit, 2013.
I. Paredes-Oliva, P. Barlet-Ros, and X. Dimitropoulos, “FaRNet: Fast Recognition of High Multi-Dimensional Network Traffic Patterns (poster),” in ACM SIGMETRICS, 2013.
M. Djatmiko, D. Schatzmann, A. Friedman, X. Dimitropoulos, and R. Boreli, “Privacy Preserving Distributed Network Outage Monitoring (poster),” in IEEE INFOCOM, 2013.
E. Glatz and X. Dimitropoulos, “Classifying Internet One-way Traffic (poster),” in ACM SIGMETRICS, 2012.
X. Dimitropoulos, “Research Roadmap on Security Measurements,” in SysSec Workshop, 2011.
I. Paredes-Oliva, X. Dimitropoulos, M. Molina, P. Barlet-Ros, and D. Brauckhoff, “Automating Root-Cause Analysis of Network Anomalies using Frequent Itemset Mining (demo),” in ACM SIGCOMM, 2010.
M. Burkhart, M. Strasser, D. Many, and X. Dimitropoulos, “SEPIA: Aggregation of Network Measurements Using Multiparty Computation (poster),” in Springer Passive and Active Measurement Conference (PAM), 2010.
D. Schatzmann, W. Mulbauer, T. Spyropoulos, X. Dimitropoulos, and B. Plattner, “The Internet Mail System from the Network’s Perspective (poster),” in Springer Passive and Active Measurement Conference (PAM), 2010.
X. Dimitropoulos and A. Kind, “Simplifying the Configuration of Network Monitoring Probes,” in CERT FloCon Conference, 2008.
X. Dimitropoulos, D. Krioukov, G. Riley, and K. Claffy, “Classifying the Types of Autonomous Systems in the Internet (poster),” in ACM SIGCOMM, 2005.
X. Dimitropoulos, G. Riley, D. Krioukov, and R. Sundaram, “Towards a Topology Generator Modeling AS Relationships (poster),” in IEEE International Conference on Network Protocols (ICNP), 2005.
P. Sermpezis, V. Kotronis, P. Gigis, X. Dimitropoulos, D. Cicalese, A. King, and A. Dainotti, “ARTEMIS: Neutralizing BGP Hijacking Within a Minute,” IEEE/ACM Transactions on Networking, vol. 26, iss. 6, 2018.
P. Sermpezis, V. Kotronis, A. Dainotti, and X. Dimitropoulos, “A Survey Among Network Operators on BGP Prefix Hijacking,” Computer Communication Review, vol. 48, iss. 1, p. 64–69, 2018.
A. Dainotti, E. Katz-Bassett, and X. Dimitropolous, “The BGP Hackathon 2016 Report,” Computer Communication Review, vol. 46, iss. 3, p. 12:1–12:6, 2016.
A. Dainotti, K. Benson, A. King, B. Huffaker, E. Glatz, X. Dimitropoulos, P. Richter, A. Finamore, and A. Snoeren, “Lost in Space: Improving Inference of IPv4 Address Space Utilization,” IEEE Journal on Selected Areas in Communications (JSAC), vol. 34, iss. 6, pp. 1862-1876, 2016.
N. B. Weidmann, S. Benitez-Baleato, P. Hunziker, E. Glatz, and X. Dimitropoulos, “Digital discrimination: Political bias in Internet service provision across ethnic groups,” Science, vol. 353, iss. 6304, p. 1151–1155, 2016.
D. Gkounis, V. Kotronis, C. Liaskos, and X. Dimitropoulos., “On the Interplay of Link-Flooding Attacks and Traffic Engineering,” Computer Communication Review, 2016.
C. Liaskos, A. Tsioliaridou, A. Pistillides, I. F. Akyildiz, N. Kantartzis, A. Lalas, X. Dimitropoulos, S. Ioannidis, M. Kafesaki, and C. Soukoulis, “Design and Development of Software Defined Metamaterials for Nanonetworks,” IEEE Circuits and Systems Magazine, 2016.
R. Kloeti, B. Ager, V. Kotronis, G. Nomikos, and X. Dimitropoulos, “A Comparative Look into Public IXP Datasets,” Computer Communication Review, 2016.
V. Kotronis, A. Gamperli, and X. Dimitropoulos, “Routing centralization across domains via SDN: A model and emulation framework for BGP evolution,” Computer Networks, 2015.
V. Kotronis, R. Kloti, M. Rost, P. Georgopoulos, B. Ager, S. Schmid, and X. Dimitropoulos, “Investigating the Potential of the Inter-IXP Multigraph for the Provisioning of Guaranteed End-to-End Services,” SIGMETRICS Performamce Evaluation Review, 2015.
A. Gamperli, V. Kotronis, and X. Dimitropoulos, “Evaluating the Effect of Centralization on Routing Convergence on a Hybrid BGP-SDN Emulation Framework,” Computer Communication Review, 2014.
E. Raftopoulos and X. Dimitropoulos, “IDS Alert Correlation in the Wild with EDGe,” IEEE Journal on Selected Areas on Communications (JSAC), 2014.
A. Dainotti, K. Benson, A. King, K. Claffy, M. Kallitsis, E. Glatz, and X. Dimitropoulos, “Estimating Internet Address Space Usage Through Passive Measurements,” ACM SIGCOMM Computer Communication Review (CCR), vol. 44, iss. 1, 2014.
I. Paredes-Oliva, P. Barlet-Ros, and X. Dimitropoulos, “FaRNet: Fast Recognition of High Multi-Dimensional Network Traffic Patterns,” Elsevier Computer Networks, vol. 41, iss. 1, 2013.
M. Djatmiko, D. Schatzmann, A. Friedman, X. Dimitropoulos, and R. Boreli, “Collaborative Network Outage Troubleshooting with Secure Multiparty Computation,” IEEE Communications Magazine, vol. 51, iss. 11, 2013.
D. Brauckhoff, X. Dimitropoulos, A. Wagner, and K. Salamatian, “Anomaly Extraction in Backbone Networks using Association Rules,” IEEE/ACM Transactions on Networking (ToN), 2012.
F. Fusco, X. Dimitropoulos, M. Vlachos, and L. Deri, “pcapIndex: An Index for Network Packet Traces with Legacy Compatibility,” ACM SIGCOMM Computer Communication Review (CCR), vol. 42, iss. 1, 2012.
M. Burkhart and X. Dimitropoulos, “How to Protect Data Privacy in Collaborative Network Security,” ERCIM News, vol. 90, 2012.
M. Burkhart and X. Dimitropoulos, “Privacy-Preserving Distributed Network Troubleshooting – Bridging the Gap between Theory and Practice,” ACM Transactions on Information and Systems Security (TISS), vol. 14, iss. 4, 2011.
X. Dimitropoulos, D. Krioukov, G. Riley, and A. Vahdat, “Graph Annotations in Modeling Complex Network Topologies,” ACM Transactions on Modeling and Computer Simulation, vol. 19, iss. 4, 2009.
A. Kind, M. Stoecklin, and X. Dimitropoulos, “Histogram-based Traffic Anomaly Detection,” IEEE Transactions on Network and Service Management, vol. 6, iss. 2, 2009.
D. Dechouniotis, N. Leontiou, X. Dimitropoulos, A. Kind, and S. Denazis, “Unveiling the underlying relationships over a network for monitoring purposes,” Wiley International Journal of Network Management, vol. 19, iss. 6, 2009.
X. Dimitropoulos, P. Hurley, and A. Kind, “Probabilistic Lossy Counting: An efficient algorithm for finding network traffic heavy hitters,” ACM SIGCOMM Computer Communication Review (CCR), vol. 38, iss. 1, 2008.
X. Dimitropoulos, Á. M. Serrano, and D. Krioukov, “On cycles in AS relationships,” ACM SIGCOMM Computer Communication Review (CCR), vol. 38, iss. 3, 2008.
X. Dimitropoulos, M. Stocklin, P. Hurley, and A. Kind, “The Eternal Sunshine of the Sketch Data Structure,” Elsevier Computer Networks, vol. 52, iss. 17, 2008.
A. Kind, S. Denazis, X. Dimitropoulos, and B. Claise, “Advanced Network Monitoring Brings Life to the Awareness Plane,” IEEE Communications Magazine, vol. 46, iss. 10, 2008.
X. Dimitropoulos, D. Krioukov, M. Fomenkov, B. Huffaker, Y. Hyun, K. Claffy, and G. Riley, “AS Relationships: Inference and Validation,” ACM SIGCOMM Computer Communication Review (CCR), vol. 37, iss. 1, 2007.
X. Dimitropoulos and G. Riley, “Efficient Large-Scale BGP Simulations,” Elsevier Computer Networks, Special Issue on Network Modeling and Simulation, vol. 50, iss. 12, 2006.
P. Mahadevan, D. Krioukov, M. Fomenkov, B. Huffaker, X. Dimitropoulos, K. Claffy, and A. Vahdat, “The Internet AS-Level Topology: Three Data Sources and One Definitive Metric,” ACM SIGCOMM Computer Communication Review (CCR), vol. 36, iss. 1, 2006.
P. Sermpezis and X. Dimitropoulos, “Inter-domain SDN: Analysing the Effects of Routing Centralization on BGP Convergence Time,” 2016.
D. Gkounis, V. Kotronis, and X. Dimitropoulos, “Towards Defeating the Crossfire Attack using SDN,” , arXiv preprint arXiv:1412.2013, 2014.
E. Glatz and X. Dimitropoulos, “Classifying Internet One-way Traffic,” ETH, Technical Report 336, 2012.
E. Raftopoulos and X. Dimitropoulos, “Technical Report: Shedding Light on Data Correlation during Network Forensics Analysis,” ETH, Technical Report 346, 2012.
E. Raftopoulos and X. Dimitropoulos, “Detecting, Validating and Characterizing Computer Infections from IDS Alerts,” ETH, Technical Report 337, 2011.
M. Burkhart, M. Strasser, D. Many, and X. Dimitropoulos, “SEPIA: Security through Private Information Aggregation,” ETH, Technical Report 298, 2009.
P. Mahadevan, D. Krioukov, M. Fomenkov, B. Huffaker, X. Dimitropoulos, K. Claffy, and A. Vahdat, “Lesson from Three Views of the Internet Topology,” CAIDA, Technical Report TR-2005-02, 2005.
D. Bauer, D. Dechouniotis, X. Dimitropoulos, and A. Kind, “Valley-free Shortest Path Method,” , 2011.
X. Dimitropoulos, A. Kind, B. Jansen, and J. Massar, “Determination of Network Topology Using Flow-Based Traffic Information,” , 2011.
X. Dimitropoulos, P. Hurley, A. Kind, and M. Stoecklin, “Probabilistic Lossy Counting,” , 2011.
Leoforos Plastira 100, GR-700 13 Heraklion, Crete, Greece.
University of Crete, Department of Computer Science.
GR-700 13 Heraklion, Crete, Greece.

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