Abstract:Network traffic that is not preceded by any Domain Name System (DNS) resolutions is referred to as unnamed traffic. Any DNS-based security system is ineffective against malicious content distributed through this traffic. In this paper, we introduce a novel method for identifying unnamed traffic based on the correlation of flows and DNS responses extracted from raw network traces. We describe two challenges that affect the validity of our method, and how to handle them. By applying our method to a one-week trac… Show more
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