【摘要】 防火墙技术是网络安全的主要解决方案。本文从安全策略的角度,结合第三层交换式路由器的应用 ,介绍了一种新颖的以包过滤技术和代理服务技术相结合的防火墙体系结构 ;分析了选用高档配置、高档操作系统和软件代理服务器的经济性和优点更多还原

【Abstract】 Firewall technology is one of the main measures for the network security. The paper introduces a neoteric system structure of firewall combining the technique of packet filter with proxy service.It also describes the economy and merits about the proxy server with expensive hardware, high operating system and excellent software.更多还原