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Firewalls, key components for secured network infrastructures, are faced with two different kinds of challenges: first, they must be fast enough to classify network packets at line speed, and second, their packet processing capabilities should be versatile in order to support complex filtering policies. Unfortunately, most existing classification systems do not qualify equally well for both requirements:...
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,...
Network packet classification is a key functionality for packet filters and firewalls, and its performance is crucial for such systems to maintain a high packet throughput under heavy load situations. However, many existing packet filters employ slow classification algorithms which cannot provide the required lookup performance due to slow rule set traversal. In this work, we address this problem...
With network traffic rates continuously growing, security systems like firewalls are facing increasing challenges to process incoming packets at line speed without sacrificing protection. Accordingly, specialized hardware firewalls are increasingly used in high-speed environments. Hardware solutions, though, are inherently limited in terms of the complexity of the policies they can implement, often...
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