NDIS针对IM中的数据保护处理文档，具备参考价值

snort防火墙源代码，该防火墙据有很完善的功能。-snort firewall source code, the firewall has a very sound, according to function.

libdnet provides a simplified interface to several low-level networking routines, including network address manipulation, kernel arp(4) and route(4) table manipulation, firewalling, interface configuration, and raw Ethernet and IP datagram transmission.-libdnet provides a simplified interface to several low-level networking routines, including network address manipulation, kernel arp (4) and route (4) table manipulation, firewalling, interface configuration, and raw Ethernet and IP datagram transmission.

jxta提供了你需要的技术来编写网络化的，互操作的P2P应用程序，可以容易地跨防火墙来动态发现网络上其它的对等成员，容易地跨网络和任何人共享文件，在你喜爱的站点发现每分钟更新的内容，创建一个对等成员组，成员可以容易地发现对方（在任何跨防火墙的设备上），远程监视成员的活动，在网络上和其它成员安全地通信。-jxta you need to provide the technology to prepare the network, peer-to-peer interoperability of applications, can easily cross-firewall to dynamically discover other network members such as the right, easily inter-network and any shared document, in your favorite site updates every minute found the content, the creation of a reciprocal membership, Members can easily find each other (in any cross-firewall equipment), the members of the long-range surveillance activities, on the Internet and other communications to the security of the members.

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

在别处看到的，不是我写的，与大家分享 是一个ssl vpn的，感觉不错，很有用-Seen elsewhere, is not mine to share with you is a ssl vpn, and feeling good, very useful

Sniff网络嗅探器 对局域网的数据进行捕获 -network sniffer to LAN data capture

tcp_wrappers_7.6 Unix下的防火墙源码-tcp_wrappers_7.6 Unix source firewa

NDIS IM防火墙安装文件和源代码,是学习NDIS中间层过滤最好的参考代码-NDIS IM firewall installation file and the source code is studying NDIS intermediate layer filter the best reference code

分布式环境下权限管理的讨论-distributed environment management authority under discussion

OPENVPN源代码，功能强大，在数据链路层做的-OPENVPN source code, powerful, the data link layer to do