根据国家有关政府机关办公业务网必须与公众互联网实现物理隔离的规定，为了在符合保密和安全规定的条件下，保证工作人员对政府机关办公业务网（“内网”）和公众信息网（“外网”）的同时应用，这必须从两方面入手，一是在结构化布线系统设计时，要同时布放两套以上物理隔离 According to the stipulation that the office network of government agencies concerned must be physically isolated from the public Internet, in order to ensure that staff members are able to protect the office network (“intranet”) and public information network (“intranet”) of government agencies in compliance with confidentiality and security requirements, External network ") at the same time the application, which must start from two aspects, one in the structured cabling system design, at the same time laying more than two sets of physical isolation