Snort防火墙源代码，防火墙已经非常完善，根据功能…

一款非常好的防火墙程序-one very good firewall procedures

支持HTTP/1.1、FTP、SSL、POP3、finger、plug、whois等多种协议的代理防火墙，用Python写成- Supports HTTP/1.1, FTP, SSL, POP3, finger, plug, whois and so on the many kinds of agreements proxy firewall, wrote with Python

网络过滤工具，能自己添加需要限制的内容。-Internet filtering tools that can add the need to limit their own content.

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

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

华为防火墙培训教程，内容丰富，是学习网络知识的好材料。-Huawei training tutorial firewall, content-rich, knowledge networks are good study material.

一个 ip过滤源代码的c++工程，可以看作简单的防火墙，希望对大家有帮助-an ip filter source code c works can be seen as a simple firewall, and I hope to be helpful

vc++ 实现的防火墙，可是实现自己定义规则，防止ping，断开网络，监听网络等功能。-vc++ realize the firewall, but realize their own definition of rules to prevent ping, disconnect the network, monitor network functions.

费尔防火墙源代码,现在该代码所有公司已经开始收费；原先是公司内部交流拿来研究用的。-Fil firewall source code, the code is now all the companies have begun charging; Originally used to house the exchange of research.

NetBSD和FreeBSD上实现的IPSec实现，支持各种安全协议的组合，包括AH、ESP、AH＋ESP等-NetBSD and FreeBSD to achieve the realization of IPSec support various combinations of security protocols, including AH, ESP, AH+ ESP etc.