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We investigate the bootstrapping of policy-based access control in a deny-by-default mission-critical MANET. In the absence of any initial policies, a deny-by-default system fundamentally prevents all traffic flow. Providing all policies prior to deployment assumes advanced knowledge of all possible future scenarios - an assumption that is often unrealistic in practice; furthermore, policies may change...
In defending against various network attacks, such as distributed denial-of-service (DDoS) attacks or worm attacks, a defense system needs to deal with various network conditions and dynamically changing attacks. Therefore, a good defense system needs to have a built-in "adaptive defense" functionality based on cost minimization-adaptively adjusting its configurations according to the network...
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