该文从不同角度探讨ＣＳＣＷ系统的网络安全问题。分析ＣＳＣＷ网络安全策略；简述Ｉｎｔｅｒｎｅｔ网上常用的基于路由器及路由协议、ＲＡＤＩＵＳ（ＲｅｍｏｔｅＡｕｔｈｅｎｔｉｃａｔｉｏｎＤｉａｌＩｎＵｓｅｒＳｅｒｖｉｃｅ）、身份认证（Ａｕｔｈｅｎｔｉｃａｔｉｏｎ）、访问控制（ＡｃｃｅｓｓＣｏｎｔｍｌ）、加密（Ｅｎｃｒｙｐｔｉｏｎ）、代理服务器（ＰｒｏｘｙＳｅｒｖｅｒ）、Ｗｅｂ服务器的安全机制、虚拟局域网ＶＬＡＮ（ＶｉｒｔｕａｌＬｏｃａｌＡｒｅａＮｅｔｗｏｒｋ）技术、网络管理及检测等提高网络性能和安全的重要技术；最后，给出一个可供参考的广域ＣＳＣＷ系统的网络结构及安全管理机制。 This article discusses the network security of CSCW system from different angles. Analyze the CSCW network security strategy; Briefly describe the common Internet router based on the router and routing protocols, RADIUS (Authentication and Authentication), Authentication (AccessContml), Access Control (AccessContml), Encryption, ProxyServer, Web Server Security Mechanism, virtual local area network (VLAN) technology, network management and detection to improve network performance and security. Finally, a network structure and security management mechanism for a wide area CSCW system is given.