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网络安全是一门涉及计算机科学、网络技术、通信技术、密码技术、信息安全技术、应用数学、数论、信息论等多种学科的综合性学科。国际标准化组织定义是指网络系统的硬件、软件及其系统的数据受到保护,不受偶然的或者恶意的原因而遭到破坏、更改、泄露,系统连续可靠正常的运行,网络服务不中断。主要涉及了机密性、完整性、可用性、可审性、真实性、可控性、抗否认性等属性造成网络安全问题的原因。本文通过介绍网络的开放性等理念,分析了目前计算机网络安全问题的提出和现状,针对病毒威胁、钓鱼网站及系统漏洞进行了详细的叙述。此外还阐述了一系列涉及防火墙、访问限制等传统技术及云安全等新兴安全防治技术。为从事相关专业的人员提供参考借鉴。
Network security is a comprehensive discipline that involves many disciplines such as computer science, network technology, communication technology, password technology, information security technology, applied mathematics, number theory and information theory. The definition of International Organization for Standardization means that the data of the hardware, software and system of the network system are protected, and the data of the network system are protected from accidental or malicious reasons, and the data are destroyed, changed, leaked, the system runs continuously and reliably, and the network service is not interrupted. Mainly related to confidentiality, integrity, availability, audibility, authenticity, controllability, anti-denial and other attributes cause network security problems. This paper introduces the concept of network openness, analyzes the present situation of computer network security and presents a detailed description of virus threats, phishing websites and system vulnerabilities. In addition, a series of new security technologies such as firewall and access restrictions as well as cloud security are also described. To provide relevant reference for personnel engaged in.