Abstract
This paper analyzes the current network security environment and the shortcomings of firewall products in the current network environment, and expounds the benefits that can be brought by the application of AI technology in threat detection. Then, the paper analyzes the advantages of AI firewall and expounds the characteristics that AI firewall can build learning models and realize the independent evolution of threat detection capability. Finally, the intelligent defense system and logical architecture of AI firewall are designed. The intelligent defense system has three components, including cloud intelligence, security center and firewall. The logical architecture has six layers of architecture, including hardware layer, data layer, algorithm layer, detection layer, analysis layer and interaction layer. These designs provide some reference for the design and development of AI firewall.