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- W1713270692 abstract "Security policies play a critical role in many of the current network security technologies such as firewalls, IPSec and IDS devices. The configuration of these policies not only determines the functionality of such devices, but also substantially affects their performance. The optimization of filtering policy configuration is critically important to provide high performance packet filtering particularly for high speed network security.Current packet filtering techniques exploit the characteristics of the filtering policies, but they do not consider the traffic behavior in optimizing their search data structures. This often results in impractically high space complexity, which undermines the performance gain offered by these techniques. Also, these techniques offer upper bounds for the worst case search times; nevertheless, the more common average case scenarios are not necessarily optimized. Moreover, the types of packet filtering fields used in most of these techniques are limited to IP header fields and cannot be generalized to cover transport and application layer filtering.In this paper, we present a novel technique that utilizes Internet traffic characteristics to optimize the organization of firewall policies. The proposed technique timely adapts to the traffic conditions using actively calculated statistics to dynamically optimize the ordering of packet filtering rules. The rule importance in traffic matching as well as its dependency on other rules are both considered in our optimization algorithm. Through extensive evaluation experiments using simulated and real Internet traffic traces, the proposed mechanism is shown to be efficient and easy to deploy in practical firewall implementations." @default.
- W1713270692 created "2016-06-24" @default.
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- W1713270692 date "2006-07-01" @default.
- W1713270692 modified "2023-10-01" @default.
- W1713270692 title "On autonomic optimization of firewall policy organization" @default.
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