毕业设计（论文）单片机与PC的串行通讯 专业外文翻译.docVIP

专业外文翻译 题 目 Internet Security 系 （院） 计算机科学技术系 专 业 通信工程 班 级 2008级2班 学生姓名 李华山 学 号 2008110311 指导教师 陈瑞斌 职 称 讲师 二〇一二年五月二十日 Internet Security An intruder with the right background and malicious intent has many ways to infiltrate internal company systems and network devices through the Internet connection. Once inside, the hacker has free reign to destroy, change, or steal data and these actions because various sorts of network havoc. The most popular use of the Internet, e-mail, is also insecure. The same hacker with a protocol analyzer and access to routers and other network devices can intercept or change messages. Threats like these confront such industries as Internet commerce and corporations that wish to interconnect their offices through LA Ns via the Internet. The network security market is quickly responding to the threats by applying authentication and encryption technologies to the Internet and by developing new products. These products come at a time where methods of attacking user networks are more elaborate and vendors are improving their products to keep up with the increased threats. “Users need these tools [because they realize] they can’t use traditional monitoring tools to stop increasingly sophisticated attacks,” says Jim Hurley, an analyst with The Aberdeen Group. This article describes various security threats and solutions needed to protect individuals and companies. Types of Internet Security Protection 1. Security Policy Internet connections will never be 100 percent secure. Rather than aiming for total security, an organization has to assess the value of the information it is trying to protect and balance that against the likelihood of a security violation and the cost of implementing various security measures. A company’s first line-of-defense should be either to devise or to revise its security policy for the organization that takes Internet connections into account. This policy should define in detail which employee