【摘要】 以省内４个单位完成的ＮＯＶＥＬＬ局域网的工程设计与实现为依据，阐述了在局域网的工程设计与实现中所遇到的网络安全技术问题，提出了局域网中两种拓朴的设计、实现过程及网络安全措施。实践证明：两种拓扑结构的局域网和网络安全措施是可行的。更多还原

【Abstract】 This is a review on the design and implementation of the NOVELL LAN fin- ished at four units in a certain province. The author,in accordance with his own experience in this field,proposes the improvement of technical problem of net- work safety. Two kinds of topological structure and network security in LAN design and implementation are offered.They are feasible,proved out through practice.更多还原