论文部分内容阅读
防火墙是用户与外网相互通信的一道安全屏障。防火墙为用户提供信息的安全服务,是把守本网络的唯一安全关卡,是阻断外来非法入侵的坚强之盾。防火墙既是一个限制器,也是一个分析器。它可以监控内部网和外网的任何活动,随时地保障内部网络的安全。一般情况下,防火墙都支持桥和路由两种工作模式,以及这两种模式的混合。桥模式即防火墙透明工作模式,路由模式即非透明工作模式。本文以实达公司的龙马卫士防火墙为例,分析在透明模式下的防火墙代理服务的文件传输(FTP)代理的安全设置是如何进行的。
Firewall is the user and the external network to communicate with each other a security barrier. Firewall to provide users with information security services, is to guard the network’s only safety barrier, is to block the strong illegal invasion of the shield. The firewall is both a limiter and an analyzer. It monitors any activity on the intranet and extranet to keep your intranet secure at all times. Under normal circumstances, the firewall supports both bridge and routing modes of operation, and a mixture of these two modes. Bridge mode is transparent firewall work mode, the routing mode that is non-transparent mode of operation. This paper takes Shida Guardian Firewall as an example to analyze how the FTP proxy security settings in transparent mode are carried out.