目前,越来越多的政府部门和企业机构开始应用Internet,他们的信息共享程度与网上业务不断增加。与此同时,网络攻击和犯罪活动也日益猖獗。如何防止机密信息在网络中被泄露或窜改、如何有效地抵制和打击信息犯罪、保障网络与信息安全等,给人们提出了严峻的挑战。本文将讨论主要的网络安全防范技术与产品的有关问题。 At present, more and more government departments and enterprises start to use the Internet, and their information sharing and online business are increasing. In the meantime, cyber attacks and criminal activities have also become increasingly rampant. How to prevent confidential information from being leaked or tampered in the network, how to effectively resist and crack down on information crime, and to ensure network and information security have posed severe challenges to people. This article will discuss the major issues related to network security technology and products.