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Administrators of today's networks are highly interested in monitoring traffic for purposes of collecting statistics, detecting intrusions, and providing forensic evidence. Unfortunately, network size and complexity can make this a daunting task. Aside from the problems in analyzing network traffic for this information - an extremely difficult task itself - a more fundamental problem exists: how to route the traffic for network analysis in a robust, high performance manner that does not impact normal network traffic. Current solutions fail to address these problems in a manner that allows high performance and easy management. This paper proposes OpenSAFE, a system for enabling the arbitrary direction of traffic for security monitoring applications at line rates.
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