Research on Computer Information Security Protection System Based on Big Data Background

This paper proposes a dynamic security protection architecture combining SDN technology and industrial control information security protection requirements. On the technical level, firewall protection is set up, engineer station is isolated, system security test is carried out, and network monitoring is deployed. Maintain and update the existing management system and safety technical standard at the management level in real time. On the information platform of enterprise network, it implements boundary logical isolation protection, real-time monitoring, security audit, remote transmission control, network performance management, DOS/DDOS protection, network resource security management, link load balancing and web page tamper prevention deployment. Meanwhile, based on this model, industrial network security protection system based on collaborative defense architecture is realized. Through performance test and attack and defense experiment, the protection architecture meets the communication timeliness requirement of industrial control system. The system can guarantee the dynamic safety of industrial control system and has high feasibility.