Flow screening system based on network processor, and method of flow screening system

The invention discloses a flow screening system based on a network processor, and a method of the flow screening system. The method comprises the steps: extracting information according to flow, obtaining the required feature contents, extracting key fields, and generating a feature library in a hash mode. enabling the later flow to obtain mark information according to the hitting conditions in the feature library, wherein the matching process of a hit mark is performed, and the non-matching processing of a non-hit mark is performed; performing the screening of the flow according to the mark information. 本发明公开了种基于网络处理器的流量筛选系统及其方法，根据流量，进行信息提取，获取所需的特征内容，提取关键字段，按照散列等方式生成特征库。后续流量根据特征库中的命中情况，得到标记信息，命中标记为匹配处理，未命中标记为未匹配处理，根据标记信息，对流量进行筛选处理。