François, Jérôme[University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Wagner, Cynthia[University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Computer Science and Communications Research Unit (CSC) >]
Engel, Thomas[University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Computer Science and Communications Research Unit (CSC) >]
[en] Passive DNS Analysis ; Large scale Monitoring ; Data Mining
[en] We present a monitoring approach and the supporting software architecture for passive DNS traffic. Monitoring DNS traffic can reveal essential network and system level activity profiles. Worm infected and botnet participating hosts can be identified and malicious backdoor communications can be detected. Any passive DNS monitoring solution needs to address several challenges that range from architectural approaches for dealing with large volumes of data up to specific Data Mining approaches for this purpose. We describe a framework that leverages state of the art distributed processing facilities with clustering techniques in order to detect anomalies in both online and offline DNS traffic. This framework entitled DSNSM is implemented and operational on several networks. We validate the framework against two large trace sets.
Interdisciplinary Center for Security, Reliability and Trust