Linux平台下电信级计费网关研究

Research on the Carrier Grade Accounting Router Using Linux

设计了基于Linux内核的电信级计费网关模型,实现了一种在x86硬件上使用Linux内核进行包过滤的计费系统原型.论文的主要研究工作:使用Netfilter框架,完成了网络层的数据包重组、以及应用层的报文头分析;实现了在内核中对HTTP协议的数据流进行解析及过滤,并提取出计费所需的重要信息;使用x86电信服务器对系统原型进行了实例测试,通过性能分析,证明了该系统的可用性.

This paper researches into the actuality the carrier grade accounting router using linux, designs a model of accounting router based on linux kernel, and implements a prototype of accounting router based on linux kernel running in the x86 hardware. The main research contents are as follows： （ l ） Using the Netfilter framework, dada pack recombine in network level and the application protocol analysis were implemented. （2）Kernel module use Netlink socket to communicate with the user application while the Netfilter to do the application protocol analysis and filtering.（3） Finally, it tested the prototype of the accounting router system with carrier grade x86 server, and proved the availability with the performance data.