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Recent developments have made it possible to interoperate complex business applications at much lower costs. Application interoperation, along with business process reengineering can result in significant savings by eliminating work created by disconnected business processes due to isolated business applications. However, we believe much greater productivity benefits can be achieved by facilitating timely decision-making, utilizing information from multiple enterprise perspectives. To stay competitive in this current scenario, it is crucial for organizations to react quickly to changing security factors, such as virus attack, active intrusion, new technologies, and cost of disaster recovery. Such information security changes often encourage the creation of new security schemas or security improvements. Accommodating frequent systems information changes requires a network security system be more flexible than currently prevalent systems. Consequently, there has recently been an increasing interest in flexible network security and disaster recovery systems.