use of the operating system to write to the API function firewall

VOIP透明穿透NAT防火墙的方法介绍！硕士学位论文！-VoIP NAT firewall penetration transparent method introduced! Master"s degree thesis!

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.

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.

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

防火墙VB源代码：从源站下载的源代码(www.DownCode.com)网上收藏

snort防火墙源代码，该防火墙据有很完善的功能。-snort firewall source code, the firewall has a very sound, according to function.

ipchains防火墙的一个流量分析工具和配置工具-A flowing analysing and configurating tool about ipchains firewall.

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

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

The doorman guards the door of a server, manipulating firewall rules to admit only recognized parties