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With the continual growth of the variety and complexity of network crime means, the traditional packet feature matching cannot detect all kinds of intrusion behaviors completely. It is urgent to reassemble network stream to perform packet processing at a semantic level above the network layer. This paper presents an efficient TCP stream reassembly mechanism for real-time processing of high-speed network traffic. By analyzing the characteristics of network stream in high-speed network and TCP connection establishment process, several polices for designing the reassembly mechanism are built. Then, the reassembly implementation is elaborated in accordance with the policies. Finally, the reassembly mechanism is compared with the traditional reassembly mechanism by the network traffic captured in a typical gigabit gateway. Experiment results illustrate that the reassembly mechanism is efficient and can satisfy the real-time property requirement of traffic analysis system in high-speed network. 相似文献
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阐述三峡雾情特点及其对航运的影响,认为应建立“二级预警、二级发布”的三峡雾航预警机制,提出加强三峡雾航安全预警管理对策:提高雾情预报水平;建立雾航安全应急联动机制;强化水上交通从业人员雾航安全意识;增强船舶雾航适应能力;加强重点河段雾航预警监控站点建设。 相似文献
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