【摘要】 介绍了将Ｂ２安全操作系统与防火墙技术结合，设计了一个包括包过滤、应用代理、身份认证和访问控制、完整性相结合的实用防火墙系统．这种防火墙不仅能阻止外部不安全因素蔓延到内部网，而且能解决系统内部安全问题．更多还原

【Abstract】 This article combines B2 security operating system with firewall technology, it designs. firewall system that includes package fklter, application proxy, authentication and calling control, integrity. This kind of firewall can not only prevent external unsafe factors from extending to internal network, but also can solve the safe problems in the system.更多还原