这是一个简单的防火墙，用VB开发的，功能很少，不过可以借鉴一下编程方法，很有用的...

Internet 协议安全 (IPSec)-Internet Protocol Security (IPSec)

我们自己的作品，希望可以在大家的帮且慢下有进一步的提高，也能为计算机的软件事业，作一点应有的贡献．-our own works, I can help you in a minute under the further improvement, but also to computer software, should make a contribution.

自动vpn拨号，用batch来拨vpn连接，同时按照自己的需要设置路由-Vpn dial-up automatically using batch to dial vpn connection, at the same time according to their own need to set up routing

一个驱动级的防火墙源程序，基于ndis hook，可以设定外部设定过滤规则，-A drive source firewall level, based on ndis hook, set the filter can be set to external rules,

一个简单的 防火墙 -A simple firewall

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

一段网络监控程序的源码,里面有说细的注释-network monitoring procedures for the source, and they said fine Notes

简单防火墙-Simple firewall

又一个防火墙源代码，是用VC做的，功能虽然比较简单，但对初学者有用吧-also a firewall source code is the use of VC do, even though it is relatively simple, but it useful for beginners

获取本地网络设置和网卡信息的简单程序，具有很高的效率-Access to the local network settings and network card information simple procedure with high efficiency