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Research and Application of embedded platform network packet capture

Author: ZengLi
Tutor: WuJin
School: University of Electronic Science and Technology
Course: Applied Computer Technology
Keywords: intranet monitoring and auditing system embedded device packet capture platform memory mapping protocol analysis module
CLC: TP393.08
Type: Master's thesis
Year: 2011
Downloads: 12
Quote: 0
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Abstract


With people pay more and more attention to network security, monitoring and auditing system of intranet has been greatly developed. in these systems, because embedded device can make an instrument through combining with intranet monitoring system, which make people use it very easily, and embedded devices’ compact, cheap feature is more and more popular, so now researching and implementing the embedded network monitoring and auditing system is a hot spot.Because the packet capture is the core of network monitoring systems. In the case of low resource utilization and cpu processing capacity is not strong for embedded device, how to efficiently capture network packets is the porblem we need to fix and improve. This thesis address this issue, design current packet capture platform. This packet capture platform is divided into: data packet capture module, the buffer pool module, the user interface module and the data packet filtering module.The module of buffer pool and user interface used the idea of memory mapping, Packet filtering module used the algorithm which use the hash table to store the keyword, when filtering information configured simple, this algorithm is more efficient and appropriate. Test results showed that this packet capture platform is better than traditional ones.Internet access is the most important ways for people to get information, employees at work will inevitably browsing the web. In order to regular employees’work, it is necessary to monitor the content on the internet which employees browse. Therefore, after finishing the packet capture platform, it will integrated into the monitoring and auditing system, we also designed the structure of protocol analysis module, then we use packet capture platform to capture data packets which has illegal site, protocol analysis module can intercept and storage of these information for enterprises investigating these irregularities in the future.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer Network Security
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