一个Unix系统安全增强工具，Shell程序

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

一个简单的防火墙程序- A simple firewall procedure

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.

这是一个简单的防火墙，用VB开发的，功能很少，不过可以借鉴一下编程方法，很有用的-This is a simple firewall, using VB, functional little, but I can learn some lessons from programming, a very useful

网络安全工具简介――sniffer-network security tools brief-- sniffers

windows下的防火墙，支持对协议，源/目的端口的过滤。可以设置阻止列表。-under the windows firewall, support for the agreement, the source/destination port of the filter. The list can be set to stop.

一个Unix系统安全增强工具，Shell程序 -A Shell tool which can enhance Unix system security

检查系统是否被修改过的程序 -A good multi-platform firewa

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.

防火墙的原理及其构筑-firewall principle and build