By Lingyu Wang
This Springer short examines the instruments according to assault graphs that aid display community hardening threats. latest instruments element all attainable assault paths resulting in severe community assets. notwithstanding no present device offers an instantaneous strategy to get rid of the threats, they're a extra effective technique of community security than depending exclusively at the event and talents of a human analyst. Key historical past info on assault graphs and community hardening is helping readers comprehend the complexities of those instruments and methods. community Hardening: an automatic method of bettering community defense is a useful source for researchers and execs operating in community defense. it's also a great tool for advanced-level scholars excited by safety in desktop technological know-how and electric engineering.
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Additional info for Network Hardening: An Automated Approach to Improving Network Security
Swiss Finance Institute Research Paper Series 08–12, Swiss Finance Institute, 2008. 5. G. H. Osman. Metaheuristics: A bibliography. Annals of Operations Research, 63(5):511–623, 1996. 6. S. Jajodia, S. Noel, and B. O’Berry. Topological analysis of network attack vulnerability. In V. Kumar, J. Srivastava, and A. Lazarevic, editors, Managing Cyber Threats: Issues, Approaches and Challenges. Kluwer Academic Publisher, 2003. 7. S. Jha, O. M. Wing. Two formal analysis of attack graph. In Proceedings of the 15th Computer Security Foundation Workshop (CSFW’02), 2002.
More generally, the following enumerates the different cases we would have to consider in handling cycles during a forward search. – As illustrated in the upper left-hand side of Fig. 5 (0 indicates disabled and 1 not disabled), if we reach a cycle through a condition and if all the exploits required by this condition are not disabled, and if no other exploit from outside the cycle can satisfy the required conditions inside the cycle, then all the nodes will be considered disabled. – As illustrated in the upper right-hand side of Fig.
A cost function is said to be additive if and only if the following additional axiom is satisfied. 4) Many different cost functions may be defined. 3. If actions in A are pairwise disjoint, then costa is also additive. 4 Network Hardening In this section, we first examine in more details the limitations of the approach proposed in the previous chapter, and then introduce our approximation algorithm to find reasonably good hardening strategies in a time efficient manner. 1 Limitations of Previous Approach The algorithm presented in the previous chapter starts from a set Ct of target conditions and traverses the attack graph backwards, making logical inferences.