本文简要介绍了计算机网络存在的安全问题,分析了威胁网络安全的主要因素,着重阐述了网络安全管理技术及其应用策略,包括防火墙技术的应用,虚拟专用网,安全扫描等,并研究了基于网络安全的加密技术和生物识别技术的应用。 This article briefly introduces the security problems in computer networks, analyzes the main factors that threaten network security, and emphatically expounds the network security management technology and its application strategy, including the application of firewall technology, virtual private network, security scanning and so on. Network Security Encryption and Biometrics Applications.