This tool is aim to test the technology of evading ids by utilizing the weaken of network layer and the transmission layer . and then we test the snort by using the tester and the hacker tool , from the result we find a critical problem faced by a network intrusion detection system ( nids ) is that of ambiguity is the main reason that producing the make false positive and false negative 通過該工具與第三方黑客軟件? fragroute相結合,對入侵檢測系統(tǒng)軟件- - snort進行測試,從結果的分析中得知網(wǎng)絡入侵檢測體系所面臨的語義模糊性問題是造成漏報率和誤報率很高的一個主要原因,入侵者就可能利用這一漏洞逃過nids的檢測或者引起檢測系統(tǒng)的誤警。