Security is hard. Security is expensive. Both statements seem to reflect the sentiment of the general population who is in dire need of securing the electronic communications that have become the ubiquitous means of business communication today. The term enterprise network security is becoming more and more prevalent as corporations try to understand and manage the risks associated with the rapidly developing business applications and practices deployed over corporate network infrastructures. Although this statement may at first seem rather dismal, it is just stating reality: Absolute security does not exist. Facts of life: Devices will be misconfigured, new attacks will be created, and software has bugs. The best any corporation ...

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