经过多年的发展,大中型企业通常已经建立了内部网络,并且在不同区域设立分支机构,同时通过供应链管理系统连接上下游合作伙伴,企业的网络结构也伴随企业的发展壮大而变得越来越复杂。相应地,这些企业的网络安全防范体系也需要根据企业网络结构的变化而不断进行调整和完善。但层 After years of development, large and medium-sized enterprises usually have established internal networks and branches in different regions. Meanwhile, they also connect upstream and downstream partners through the supply chain management system. As a result, the network structure of enterprises becomes more and more accompanied by the growth of enterprises The more complicated. Correspondingly, the network security prevention system of these enterprises also needs to be constantly adjusted and perfected according to the change of the structure of the enterprise network. But layers