一个用VB写的个人防火墙，功能相当不错。

NDIS驱动开发，具备相当参考价值-NDIS driver development, with considerable reference value

一个简单的防火墙程序。-a simple firewall procedures.

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

一个专业的防火墙软件，主要针对目前的端口，共享，能监控系统的安全状态，检测到问题能准确通知用户，更新部分模块，增加了实用、可操作性以及提高准确性-A professional firewall software, mainly targeted at the port, share, capable of monitoring the safety of the system state, to detect the problem accurately inform the user, update a number of modules, an increase of utility, maneuverability and enhance the accuracy of

ipsec vpn的例子程序 主要是演示vpn-ipsec ipsecsample-app.rar

Linux防火墙程序设计-Linux firewall program design

微软的一个ndis驱动程序例子,写防火墙的朋友可以参考-A ndis driver example of Microsoft. and it can be referred to those who writes the firewall

基于费尔的Ndis Hook技术的网络监控系统 目录列表: TGuard 应用程序目录 TGuard_sys For 2k的驱动程序 Release 存放应用程序 Def 应用程序和驱动共用的一个定义文件 Tools 工具 安装: 将.sys文件放到windowssystem32driver目录下,导入Tools目录中installHook.reg,重启. 注意点: 支持winRoute,Winxp带的ics共享,isa Server, 不支持sygate. 对网卡无限制.-Ndis Hook Technology Network Monitoring System directory listings : TGuard application directory TGuard_sys For 2k Driver Release storage applications Def applications and drive a shared definition document Tools installation tool :. Sys documents into windows system32 driver directory, import Tools directory installHook.reg restart. attention : winRoute support, with the ICs Winxp sharing, isa Server, does not support Sygate. NIC unrestricted right.

适用于Windows2000_XP操作系统的防火墙源代码-Applicable to Windows2000_XP firewall operating system source code

简单防火墙-Simple firewall