关键词: 模糊Petri网, 双枝模糊逻辑, 攻击建模

Abstract: Based on both-branch fuzzy logic and Fuzzy Petri Net（FPN），a new network attack model named Both-Branch Fuzzy Logic Petri-net Attack Net（BBFLPAN） is put forward.The promoting and suppressive factors to network attack are analyzed in this attack model.In order to make fine distinction between attack actions and effects，the process of attack and defense actions are depicted as the place of FPN and the system states are depicted as the transition.The changes of network attack states can be represented directly.Based on the both-branch fuzzy logic analysis，a reasoning algorithm is proposed which applies incertitude consequence way and the effectiveness of the algorithm is verified by experiment.This paper originally considers together the factors pro-and-con that has effect on attack so that a closer network attack description to reality is made by this model.

Key words: fuzzy Petri net, both-branch fuzzy logic, attack modeling