Publication details

Flow Based Network Intrusion Detection System using Hardware-Accelerated NetFlow Probes

Authors

BARTOŠ Karel GRILL Martin KRMÍČEK Vojtěch REHÁK Martin ČELEDA Pavel

Year of publication 2008
Type Article in Proceedings
Conference CESNET Conference 2008 : security, middleware, and virtualization – glue of future networks
MU Faculty or unit

Institute of Computer Science

Citation
Web http://www.ces.net/events/2008/conference/
Field Informatics
Keywords network intrusion detection; anomaly detection; security; NetFlow
Description Current network intrusion detection methods based on anomaly detection approaches suffer from comparatively higher error rate and low performance. Proposed flow based network intrusion detection system addresses these issues by (i) using hardware-accelerated probes to collect unsampled NetFlow data from gigabit-speed network links and (ii) combining several anomaly detection algorithms by means of collective trust modeling, a multi-agent data fusion method. The data acquired on the network is preprocessed and passed to anomaly detection models to gather independent anomaly opinions for each flow. The anomaly data is passed to several trust models to aggregate the anomalies with past experience, and the flows are re-evaluated to obtain their trustfulness, which is further aggregated to detect malicious traffic. Experiments performed on-line on real campus network illustrate system suitability for real-time network surveillance.
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