A Defense Strategy Selection Method Based on the Cyberspace Wargame Model

Abstract

Network defenders always face the problem of how to use limited resources to make the most reasonable decision. The network attack-defense game model is an effective means to solve this problem. However, existing network attack-defense game models usually assume that defenders will no longer change defense strategies after deploying them. However, in an advanced network attack-defense confrontation, defenders usually redeploy defense strategies for different attack situations. Therefore, the existing network attack-defense game models are challenging to accurately describe the advanced network attack-defense process. To address the above challenges, this paper proposes a defense strategy selection method based on the network attack-defense wargame model. We model the advanced network attack-defense confrontation process as a turn-based wargame in which both attackers and defenders can continuously adjust their strategies in response to the attack-defense posture and use the Monte Carlo tree search method to solve the optimal defense strategy. Finally, a network example is used to illustrate the effectiveness of the model and method in selecting the optimal defense strategy.

Key Node Identification Based on Vulnerability Life Cycle and the Importance of Network Topology

“…different combinations in the network structure of n nodes. Therefore, in the process of analysis, the formal description of the network attack and defense environment can greatly reduce the computational complexity (Zhu & He, 2021).…”