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。

获取本地网络设置和网卡信息的简单程序，具有很高的效率-Access to the local network settings and network card information simple procedure with high efficiency

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.

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

防火墙类网站集锦-firewall website Collection

一个网络安全测试工具 -A network security test tool

NDIS的PASSTHRU层的驱动程序，MySource应用层的程序，负责向驱动程序发指令，本来是想做防火墙的，可后来做到可过滤IP地址后没有再做了

IPFilter,顾名思义,乃为IP过滤之意思.读懂并集成到你的应用中,应该很有意思-IPFilter, as its name implies, is for the meaning of IP filtering. Understood and integrated into your applications, should be very interesting

这是加密文件或字符串的源代码.安全性还可以.大家可以看看.-This is the document or string encryption source code. Security can also. We can look at.

C＋＋ 编写的防火墙启驱动，方便支持二次开发-prepared by the firewall Kai Drive to facilitate the development of secondary support

一个通过icmp包实现通信的小工具，里面详细介绍了，学习网络协议的好东西。