一个ICMP数据包通过一个小的通信工具的实现，这是…

NDIS针对IM中的数据保护处理文档，具备参考价值-NDIS for IM data protection in the document deal with the reference value

利用操作系统提供的API函数写的防火墙-use of the operating system to write to the API function firewall

Linux IP包过滤的增强 -Linux ip packet filter s enhance

一个非常专业的VB个人防火墙，如果加强一下可以用以商业目的-a very professional VB personal firewall, what can be used to enhance commercial purposes

XFILTER 一个windows下的防火墙的源代码-XFILTER windows of a firewall source code

windows 网络防火墙pdf+源码 描述了windows下spi的使用等技术 值得下载-windows network firewall pdf+ source described the use of windows under the spi technical merit Download

一个VPN软件（freeswan）的源码可编译，有MakeFile文件 -A VPN software (freeswan) can compile the source code, Makefile document has

好象是windows的防火墙源代码，我不喜欢ms的东东，所以没有研究他的东西，那位有兴趣的看一看!-appears to be windows firewall source code, I do not like ms Dongdong, so he did not study things, who are interested in a look!

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!

基于tdi驱动的个人防火墙，用vc++实现，是一个开源的防火墙-Tdi-driven based on the personal firewall, using vc++ Realized, is a open source firewall