关键词: 入侵检测, 大规模网络安全预警, 安全事件, 可视化, H3算法

Abstract: Visualization of security events is an important component of large-scale network security warning.The research includes combining structural characteristic of large-scale network topology with the H3 algorithm in the field of information visualization，providing methods for visualizing the overall distribution and local details of large-scale network security events，and applying it effectively to the visualization of network security data on CERNET.Experiment results show that the methods present a sound visual effect to the network administrator to help him/her grasp the global security situation，and then work out an effective control plan in an overall perspective.

Key words: intrusion detection, large-scale network security warning, security events, visualization, H3 algorithm