Intrusion detection system finds unauthorized or malign network accessing behavior by means of monitoring the states and activities of running 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，检测出非授权的和恶意的网络访问行为，及时产生入侵告警，为入侵对抗提供有效的支持。