Research on the game of network security attack-defense confrontation through the optimal defense strategy

With the complication of attack means, the network security technology needs new changes. This study analyzed the establishment of the game model and strategy selection in the process of network security attack and defense confrontation. Firstly, the relevant theory of game theory was introduced; then the network attack and defense game model was established; the components of the model were analyzed; and finally, the Nash equilibrium of the hybrid strategy was solved to obtain the optimal defense strategy. The simulation results showed that the method could find the best attack and defense strategy {a(3), d(4)} in the complex hybrid strategy. The calculation of payoff verified the correctness of the strategy. The experimental results show that the application of the attack-defense confrontation in the network security field is feasible and it can effectively generate optimal attack-defense strategy to realize network security.