计算机网络安全.同以前的计算机安全保密相比，计算机网络安全技术的问题要多得多，也复杂的多，涉及到物理环境、硬件、软件、数据、传输、体系结构等各个方面。除了传统的安全保密理论、技术及单机的安全问题以外，计算机网络安全技术包括了计算机安全、通信安全、访问控制的安全，以及安全管理和法律制裁等诸多内容，并逐渐形成独立的学科体系。-Computer network security. The same compared to the previous computer security, computer network security issues much more, but also more complex, involving physical environment, hardware, software, data, transport, architecture and other aspects. In addition to traditional security theory, technology, and stand-alone security issues, computer network security technologies, including computer security, communications security, access control, security, and safety management and legal sanctions and other content, and gradually form an independent disciplinary system.