earticle

영어

In order to solve the redundancy question in complex network which is caused by similar attack method and similar node object in attack model, the node domain and transition domain of Petri Net are divided into equivalence classes, and then the construction method of rough vulnerability relation model is given. By defining similar degree of path, search for all of the characteristic attack path which can attain attack object by use of ant algorithm, and calculate the maximal threat of object node which is brought by characteristic strategy. In order to ensure threat prediction suit for attack scene, dynamic perception method of network threat is proposed, which relies on Intrusion Detection Systems (IDS) warning to amend threat value constantly.