Multi-dimensional Aggregation for DNS Monitoring
Résumé
DNS is an essential service in the Internet as it allows to translate human language based domain names into IP addresses. DNS traffic reflects the user activities and behaviors. It is thus a helpful source of information in the context of large scale network monitoring. In particular, passive DNS monitoring garnered much interest for the security perspectives by highlighting the services the machines want to access. In this paper, we propose a new method for assessing the dynamics of the match between DNS names and IP subnetworks using an efficient aggregating scheme combined with relevant steadiness metrics. The evaluation relies on real data collected over several months and is able to detect anomalies related to malicious domains.
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