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The number of attacks against large computer systems is currently growing at a rapid pace. Despite the best efforts of security analysts, large organizations are having trouble keeping on top of the current state of their networks. In this paper, we describe a tool called NVisionIP that is designed to increase the security analyst's situational awareness. As humans are inherently visual beings, NVisionIP uses a graphical representation of a class-B network to allow analysts to quickly visualize the current state of their network. We present an overview of NVisionIP along with a discussion of various types of security-related scenarios that it can be used to detect.
Lakkaraju et al. (2004) studied this question.