In recent years, more and more attention is paid to the network security. Network intrusion detection and network vulnerability analysis are active solution for network security problems, and they are too much important.

• 网络安全问题越来越受到人们的重视，网络入侵检测和网络脆弱性分析是主动的网络安全解决方案，是解决这一问题的重要手段之一。