This paper discusses educational network security. Firstly, the security threats in the teaching area, office area, and data center were analyzed. Next, the security requirements for each region were defined, and the design and implementation of security zoning strategies were elaborated, including the principles and methods of dividing regions based on functions, security levels, and data flow, as well as the strategy design for core security zones, security service zones, and general user zones. Finally, the implementation steps and management measures of the security partition strategy were introduced, such as network device configuration, security software installation and debugging, security assessment, personnel training, and security incident response mechanism.