摘要
并接方式进行软交换垃圾呼叫限制的实时性和安全性较差,对此采用串接方式接入软交换信令系统。通过对Linux下TCP/IP网络协议栈的地址绑定机制、输入和输出路由机制等分析改造,设计一种软交换信令虚拟引接的技术。测试表明,该技术可以实现对基于TCP、UDP传输信令的透明接入和安全限制;同时,协议栈的改造不对系统正常通信流程产生任何影响。
The parallel access mode to restrict spam call of soft switch is poor in real-time performance and security.To deal with this problem,this paper takes the serial access mode to soft switch signaling system and designs a virtual access technique for soft switch signaling,which is based on analyses and improvements of address binding and input output routing of TCP/IP protocol stack on the Linux platform.Experiment results indicate that the technique can implement transparent access and secure restriction based on TCP/UDP signaling.And the improvements of protocol stacks have no negative influence on normal communication processing.
出处
《信息工程大学学报》
2011年第5期612-617,共6页
Journal of Information Engineering University
基金
国家863计划资助项目(2008AA011002)
关键词
软交换
信令
虚拟引接
协议栈改造
soft switch
signaling
virtual access
improvement of protocol stacks
