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Overview:

This paper presents an architecture1 designed for alert verification (i.e., to reduce false positives) in network intrusion-detection systems. The technique in this paper is based on a systematic (and automatic) anomaly-based analysis of the system output, which provides useful context information regarding the network services. The false positives raised by the NIDS analyzing the incoming traffic (which can be either signature- or anomaly-based) are reduced by correlating them with the output anomalies. An architecture for TCP-based network services was designed which has a client/server architecture (such as HTTP).

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Format:PDFSize:270 KB
Date:Sep 2007
Pages:12

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