VPN网关数据转发模块的设计与实现

Design and Realization of VPN Gateway Data Transmission Module

论述了在WINDOWS平台上如何进行IP数据包捕获和发送的2种方法WINPCAP和原始套接字,提出一种在WINDOWS平台上实现VPN网关数据转发模块的新思路,并在结合异步调用线程池函数有效解决VPN网关中大量并发I/O处理的基础上,给出了VPN网关数据转发模块的设计与实现算法.

Two means of capturing and sending IP packet based on Windows service platform, winpcap and raw socket, are introduced and an idea of building VPN Gateway data transmission module based on Windows service platform is recommended in this paper. VPN Gateway data transmission module combined with asynchronism transfer thread pool function and is good for dealing with a plenty of current I/O operations in the system. In the end, the design and realization of VPN Gateway data transmissopm module based WIN2000 are presented.