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Packet classification is a core feature needed in firewalls, SDN switches, and QoS routers. Current research to accelerate the classification with hardware employing Field-programmable Gate Arrays (FPGAs) created a variety of approaches, with significant differences in terms of hardware resource requirements, memory usage, configuration update time, and power dissipation. However, there is no optimal,...
The process of matching the header fields of network packets against a set of rules is a performance critical task of firewalls. Software-based solutions have no chance to keep pace with the ever-growing data rates in high-speed networks. However, specialized filtering hardware is costly because complex logic is required in order to be able to apply arbitrary rulesets to a packet stream. By adapting...
Many companies and institutions employ packet filter firewalls in order to effectively regulate network traffic. Unfortunately, the constant growth of network bandwidth makes the task of matching packet headers against potentially large rulesets more difficult, and prohibits the sole use of entirely software-based firewalls which cannot cope with such huge amounts of traffic. Instead, high-speed firewalls...
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