With the rapid development of social informatization and the arrival of the big data era,artificial intelligence has been widely applied in many fields and industries.At present,artificial intelligence is generating content and high-performance computing is booming.People are constantly building computing centers(or intelligent computing centers)with massive computing resources.However,in recent years,with the popularity of mining viruses,computing centers have become an important target for hackers to attack.Traditional computing centers generally use firewalls and Secure Shell(SSH)as the main means of network security protection.This type of protection poses significant security risks for account intrusions from internal system attacks,such as password leaks.If login authentication is added,it will bring great inconvenience to network configuration and user experience,and also increase a lot of network security construction funds.In this regard,this article focuses on introducing the use of big data and artificial intelligence technology in the basic network security protection of firewalls,intrusion prevention systems,and SSH.It predicts and judges the behavior of users on the system,timely interrupts their illegal destructive behavior,and protects the internal security of the system.