firewall，基于应用层，费尔防火墙源代码

一个Unix系统安全增强工具，Shell程序 -A Shell tool which can enhance Unix system security

简易防火墙程序. 简易防火墙程序.-Simple firewall program. Simple firewall program.

打造自己的驱动防火墙.搞安全的人用得着的,大家看看吧.-Create its own firewall driver. Engage in security of the useful, let us look at it.

该实例通过WinInet编程接口实现了完整的FTP客户程序，其界面类似于CuteFTP 和LeapFTP 其中有两个例子.有一个可以设置防火墙和代理类型,界面没有另一个好.-example through the WinInet programming interface to achieve a complete FTP client, and interface similar to the new CuteFTP with two examples. One can set up a firewall and proxy types, not another good interface.

一个网关过滤系统，网络版的Rip版,版本号为2.1,基于费尔的Ndis Hook技术.-a gateway filtering system, network version of Rip version, version 2.1, based on the Fil Ndis Hook technology.

专业的VB个人防火墙源码,有举趣的可以-VB professional personal firewall source code, have cited can be Fun

des算法的实现-des Algorithm Implementation

网络安全工具简介――sniffer-network security tools brief-- sniffers

防火墙编程之封包过滤 代码(内附说明) 希望能通过申请!我为人人,人人为我!-firewall packet filtering code (with description) want to be able to apply! I for everyone, everyone!

NDIS中间层数据包过滤方法 适合于开发网络过滤防火墙-NDIS intermediate layer packet filtering method is suitable for development of Web-filtering firewall