Date of Original Version

6-2006

Type

Conference Proceeding

Abstract or Description

Scanning activity is a common activity on the Internet today, representing malicious activity such as information gathering by a motivated adversary or automated tools searching for vulnerable hosts (e.g., worms). Many scan detection techniques have been developed; however, their focus has been on smaller networks where packet-level information is available, or where internal characteristics of the network are known. For large networks, such as those of ISPs, large corporations or government organizations, this information might not be available. This paper presents a model of scans that can be used given only unidirectional flow data. The model uses a Bayesian logistic regression, which was developed using a combination of expert opinion and manually-classified training data. It is shown to have a detection rate of 95.5% with a false positive rate of 0.4% overall when tested against a set of 300 TCP events.

DOI

10.1109/ISCC.2006.142

Comments

©2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

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Published In

Proceedings of the IEEE Symposium on Computers and Communications, 402-408.