The operating mechanism of intrusion detection systems is similar to the natural immune system. The theory that the immune sy stem c an p rotect b ody from i nvasion p rovides an i mportant approach t o intrusion detection.

• 入侵检测系统的运行机理与自然免疫系统有着很多相似之处,自然免疫系统成功保护肌体免受各种侵害的机理为研究入侵检测提供了重要的方法。