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计算机网络技术的飞速发展,许多网络安全技术产品也应运而生,如防火墙、入侵检测系统、VPN技术、漏洞扫描技术及实时病毒监控系统等。但是,这些系统都存在着或多或少的一些不足之处,不能保证绝对的安全,文章就防火墙的分类、工作原理、网络安全中的应用等进行了分析。 更多还原

【Abstract】 With the rapid development of the computer network technology,many network security products emerge,such as firewall,evasion inspection system,VPN technique,loophole scanning technique,real-time virus monitoring system and so on.However,these systems more or less have some drawbacks,which cannot guarantee the absolute security.This paper analyzes the types,working principle and application of the firewall in network security. 更多还原