一个VPN软件（freeswan）的源码可编译，有MakeFile文件

Wolverine Firewall and VPN Server何必买买昂贵的VPN设备这个软件足够了-Wolverine Firewall and VPN Server why bother buying expensive equipment to the software VPN enough

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.

防火墙提供了内核模式的防火墙和 NAT 机制，这些机制可以通过用户模式运行的接口程序进行监视和控制。 防火墙规则可以使用 ipf(8) 工具来动态地设置和删除。 NAT 规则可以通过 ipnat(1) 工具来维护。 ipfstat(8) 工具则可以用来显示 IPFILTER 内核部分的统计数据。 最后， 使用 ipmon(8) 程序可以把 IPFILTER 的动作记录到系统日志文件中。 -Firewall provides a kernel-mode firewall and NAT mechanisms, these mechanisms can be run through the user-mode interface program to conduct surveillance and control. Firewall rules can use the ipf (8) tools to dynamically set up and delete. NAT rules can be adopted ipnat (1) tools to maintain. ipfstat (8) tools can be used to show the core part of IPFILTER statistics. Finally, the use of ipmon (8) program can record the movements IPFILTER to the system log file.

很好的防火墙框架自动生成程序代码，可以自动生成，省略更多麻烦-Good framework for automatic generation of firewall program code can be automatically generated, omit the more troublesome

一个很好用的杀毒软件，占用很少的内存-a good use of antivirus software, which takes up very little memory!

阻止弹出广告的源码，vc的，经测试，可以借鉴-stop pop-up advertisements source, vc, tested, we can draw

应用平台 UNIX　Jakal是一个在防火墙后进行扫描的秘密扫描程序。-Jakal UNIX application platform is a firewall scan after scan the secret proceedings.

一步 的,慢慢学,你就可以成为一名入门的红课,大家加油啊,努力学习!-it will tell you how to be a rudimental hacker ,if you read and learn step by step.Come on

VOIP和网络通信中使用ETUN、TURN和CIE穿越NAT防火墙-NAT Traversal for VoIP and Internet Communications using STUN, TURN and ICE

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