实现网络安全的防火墙措施

A Firewall Measure for Network Security

针对目前网络安全的问题结合网络使用的实际情况，提出用CISCO路由器的包过滤和通信机制来构筑简单的防火墙，取得了一定的效果．

 Aim at the problem of network security combine the actual status of networkput forward packet filtering and communication mechanism of using cisco router to built simple firewallobtain some achievement．