A Model of Network Porosity
MIT Lincoln Laboratory Lexington United States
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Compartmentalization is one of the standard mechanisms used by defenders to secure enterprise networks. Unfortunately, the compartmentalization process from a security standpoint remains more of an art than a science. Even when well executed, the ongoing evolution of the network may violate initial, security-critical design assumptions. Toward improving operational security, MIT Lincoln Laboratory has produced a collection of metrics that can be used to continuously assess risk within the context of cyber security. One important security metric in this collection is a measure for managing network boundaries and filters or network porosity. This metric computes the risk inherent to a given network architecture. This report describes the model that underlies the network porosity metric, and a simulation implementing the model.
- Computer Systems
- Computer Systems Management and Standards