%A LIU Jing-wei, LIU Jing-ju, LU Yu-liang, YANG Bin, ZHU Kai-long %T Optimal Defense Strategy Selection Method Based on Network Attack-Defense Game Model %0 Journal Article %D 2018 %J Computer Science %R 10.11896/j.issn.1002-137X.2018.06.020 %P 117-123 %V 45 %N 6 %U {https://www.jsjkx.com/CN/abstract/article_76.shtml} %8 2018-06-15 %X In order to reduce the loss of security risk and make the optimal network defense decision under the limited resources,the optimal defense strategy selection method based on attack-defense game model was proposed.First,network attack-defense game model was established and the existence of equilibrium model of the mixed strategy Nash was proved.Then,the network attack-defense strategy selection algorithm based on the model was given,including the attack-defense strategy searching algorithm based on network attack-defense strategy graph,the calculation method of utility function under varied attack-defense strategies based on the common vulnerability scoring system and the method for solving mixed strategy Nash equilibrium.Finally,the validity of the model was analyzed and verified in a typical attack-defense experiment.The experimental results show that the model can effectively generate the optimal defense strategy.