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提起1998年4月26日CIH病毒爆发,深受其害的人们至今心有余悸;近些年来“黑客”事件频繁发生,令世界各国防不胜防。网络不安全因素时刻严重地威胁着各个国家和地区的科技、经济、军事以及人们的生活。网络及信息的安全防护是世界各国的不懈迫求。什么是防火墙网络中的“防火墙”是当前作为网络安全的一种有效的防护手段。它是一种运行特定安全软件的计算机系统,设置在被保护网和外部网之间,形成一个安全隔离层(或叫安全网关),作为一道屏障,达到保护内部网络不受非法入侵和破坏的目的。
People who have been victimized by the CIH virus outbreak on April 26, 1998 are still in a linger with fear. In recent years, frequent incidents of “hacking” have prevented all countries in the world from being able to guard against any possible attacks. Network insecurity always threatens the science, technology, economy, military affairs and people’s life in various countries and regions at all times. The security of networks and information is the unrelenting demand of all countries in the world. What is a “firewall” in a firewall network is an effective defense against cybersecurity today. It is a kind of computer system running specific security software, which is set up between the protected network and the external network to form a security isolation layer (or security gateway) as a barrier to protect the internal network from illegal invasion and destruction purpose.