Abstract: As a new cyber defense method,the mimic defense has an excellent defense effect due to its unpredictable characteristics.Heterogeneous executors are heterogeneous components composed of various defense strategies to mimic defense.The mimic defense mechanism obtains the dynamics of defense through the dynamic scheduling of heterogeneous executors.Traditional scheduling methods have certain limitations.Because of these limitations,comprehensively considering the comprehensiveness of defense and historical defense success rate information,a new dynamic scheduling algorithm FAWA with negative feedback capability is proposed,and simulation collision experiments are designed.The network attack and defense process are compared with the defense effects of other scheduling methods.The experimental results show that in the scenario where the attacker randomly loads the attack load,the scheduling effect of the FAWA algorithm is always better than other algorithms,which can well improve the defense success.In the scenario where the attacker also adopts negative feedback loading,the scheduling effect of the FAWA algorithm is better than that of the CRA algorithm and some improved dynamic artificial weighting algorithms but weaker than FIFO.Besides,the simulation experiment compares the two types of load loading scenarios of the attacker and finds that in the random loading scenario,the defender's defense success rate is lower,indicating that the attacker's success rate is better than the negative feedback loading scenario.This conclusion shows that the attack also needs to have randomness and unpredictability in the network attack and defense game,and should not be excessively interfered and adjusted.

Key words: Dynamic scheduling strategy, Heterogeneous executor, Mimic defense, Negative feedback scheduling, Simulation