Computer Science – Networking and Internet Architecture
Scientific paper
2009-12-29
International Journal of Recent Trends in Engineering, Volume 1, Number 1, May 2009
Computer Science
Networking and Internet Architecture
Pre-print version. International Joint Journal Conference in Engineering, IJJCE 2009
Scientific paper
Network intrusion detection systems play a critical role in protecting the information infrastructure of an organization. Due to the sophistication and complexity of techniques used for the analysis they are commonly based on general-purpose workstations. Although cost-efficient, these general-purpose systems are found to be inadequate as they are unable to perform efficiently at high packet rates. The resulting packet loss degrades the system's overall effectiveness, as the analyzing capability of the system is reduced. It has been found that the performance of these sensors can be improved significantly by filtering out unwanted packets. This paper presents the design of a Programmable Ethernet Interface Card that is used to offload signature matching from software and thereby improve the detection ratio and performance of the system.
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