NetSecuritas

Sophisticated cyber-attacks have become prominent with the growth of the Internet and web technology. Such attacks are multi-stage ones, and correlate vulnerabilities on intermediate hosts to compromise an otherwise well-protected critical resource. Conventional security assessment approaches can leave out some complex scenarios generated by these attacks. In the literature, these correlated attacks have been modeled using attack graphs. Although a few attack graph-based network security assessment tools are available, they are either commercial products or developed using proprietary databases. In this paper, we develop a customized tool, NetSecuritas, which implements a novel heuristic-based attack graph generation algorithm and integrates different phases of network security assessment. NetSecuritas leverages open-source libraries, tools and publicly available databases. A cost-driven mitigation strategy has also been proposed to generate network security recommendations. Experimental results establish the efficacy of both attack graph generation and mitigation approach.