网络安全简介“计算机安全”被国际标准化组织(ISO)定义为:“为数据处理系统建立和采取的技术及其管理的安全保护,保护计算机硬件、软件数据不因偶然和恶意的原因而遭到破坏、更改和泄露。”也有人将“计算机安全”定义为:“计算机的硬件、软件和数据受到保护,不因偶然和恶意的原因而遭到破坏、更改和泄露,系统连续正常运行。”据此,可以认为计算机安全应包括两方面的内容:即物理安全和逻辑安全。物理安全指系统设备及相关设施受到物理保护,免于破坏、丢失等。逻辑 Network Security Introduction “Computer Security” is defined by the International Organization for Standardization (ISO) as: “The technology and its management for the data processing system to establish and take security protection, protection of computer hardware, software data are not accidental and malicious reasons Vandalism, alteration and disclosure. ”Others have defined“ computer security ”as“ the computer’s hardware, software, and data are protected from being damaged, altered, and compromised by accidental and malicious causes and the system continues to function properly. ” Accordingly, you can think of computer security should include two aspects: the physical security and logical security. Physical security refers to the physical protection of system equipment and related facilities from damage, loss, etc. logic