Intrusion detection system finds unauthorized or malign network accessing behavior by means of monitoring the states and activities of the system,raises intrusion alert in time and provides effective method for intrusion countermine.

• 入侵检测系统通过监视运行系统的状态与活动,检测计算机网络中违反安全策略的行为,及时产生入侵告警,为分析入侵行为提供有效的支持。