一个ICMP数据包通过一个小的通信工具的实现，这是…

基于windows ndis的网关防火墙-based on the gateway firewall

耐威网关软件防火墙简易版 1.0-resistance Granville gateway firewall software simple version 1.0

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.

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

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.

在linux上安装ADSL的工具-A tool which installs ADSL on linux

ibdnet为几个低级网络例程提供了一个简化的接口在，包括网络地址处理，内核arp(4) 和 route(4)表处理，防火墙，接口配置，以及原始以太网和IP数据包传输。-ibdnet network of several low-level routines to provide a simplified interface, including network addresses, core arp (4) and route (4) Table processing, firewall, port configuration, and the original Ethernet and IP packet transmission.

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。

64位RSA算法源程序,VB代码.可用于INTERNET网络编程-64 RSA algorithm source, VB code. Can be used for Internet Network Programming

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!