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引言互联网络正飞速地改变着人们的生活方式和工作效率。人们用它收发电子邮件,网上购物,网上炒股,网上办公,这给社会、企业和个人带来了更大的便利。每个人都希望自己的网络系统能够可靠运行,不受外界干扰和破坏。所以网络安全性和可靠性就成为人们共同关注的问题。1.网络安全的主要目标随着计算机技术的飞速发展,安全问题正逐渐受到重视,做到防患于未然,避免造成更大的损失。网络安全的真正内涵,采用一切可能的手段来保证:第一,可用性——确保信息可被授权用户访问并按需求使用。第二,保密性——信息不要随意泄露给非授权用户。第三,可控性——对信息的传播及内容所具有的控制能力。
Introduction The Internet is rapidly changing the way people live and work efficiently. People use it to send and receive e-mail, online shopping, online stocks, online office, which gives society, businesses and individuals to bring greater convenience. Everyone wants their networked systems to operate reliably without interference and damage from outsiders. Therefore, network security and reliability has become a common concern. 1. The main goal of network security With the rapid development of computer technology, security issues are gradually being taken into account, so take preventive measures to avoid greater losses. The true meaning of cybersecurity, using all possible means to ensure that: First, the availability - to ensure that information can be authorized users to access and use on demand. Second, confidentiality - Do not leak information to unauthorized users. Third, controllability - the ability to control the spread of information and content.