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Signature-based Network Intrusion Detection Systems (NIDS) are an integral part of modern network security solutions. They help to detect and prevent network attacks and intrusions. However, they show critical performance problems in today's high speed networks. Filters have been proposed to reduce the amount of traffic to be analyzed by a NIDS, yet, such filters need to be very carefully designed...
Wake-up receivers can be used in wireless sensor networks to solve the problem of node synchronization in an energy efficient manner. Conceptually, the idea is to use a dedicated wake-up signal before the actual transmission over a main radio transceiver. Several ideas have been discussed in the literature on how to make such an architecture as energy efficient as possible. State of the art are multi-stage...
We propose Dialog-based Payload Aggregation (DPA) that extracts relevant payload data from TCP/IP packet streams based on sequence numbers in the TCP header for improved intrusion detection performance. Typical network-based Intrusion Detection Systems (IDSs) like Snort, which use rules for matching payload data, show severe performance problems in high-speed networks. Our detailed analysis based...
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