模糊Petri网是Petri网和模糊理论相结合的产物,具有模糊系统的模糊推理能力,便于知识的分析和推理。针对入侵知识具有模糊性和不确定性的特点,给出了基于加权模糊Petri网的入侵检测模型与算法。最后利用一个实例验证了该模型与算法的正确性、简单性和有效性。结果表明:该模型与算法是一种非常有效的入侵检测分析方法。 Fuzzy Petri net is a combination of Petri nets and fuzzy theory. It has the fuzzy reasoning ability of fuzzy system and facilitates the analysis and reasoning of knowledge. According to the fuzziness and uncertainty of intrusion knowledge, this paper presents an intrusion detection model and algorithm based on weighted fuzzy Petri nets. Finally, an example is used to verify the correctness, simplicity and validity of the model and algorithm. The results show that the model and algorithm are very effective intrusion detection and analysis methods.