Static analysis of routing and firewall policy configurations

Abstract

Network design that meets customer's security requirements needs careful considerations when configuring routing and filtering rules. This paper deals with an approach to security analysis based on reachability calculations in dynamically routed networks. The contribution consists of proposing routing abstract model that enables to extend existing reachability analysis approaches to obtain a finer approximation. This approximation captures the effect of routing on packets forwarding. Thus in the combination with reachability calculations based on packet filtering analysis it provides valuable information for a network designer on possible security issues in designed network. © 2012 Springer-Verlag.