基于TCP粘合技术的协议分析模块研究

业务选择网关(SSG)中的协议分析模块要求在用户与服务器建立连接之前即可将用户请求数据包解析成URL,并且根据用户权限进行访问控制,路由选择等。文中在对SSG的协议分析模块的需求进行分析之后,讨论了已有的TCP粘合技术,并提出了一种改进方案和讨论了序列号空间的影射问题。最后将该方案运用在应用层协议分析模块上,实践证明此方案可行、高效。

Research on Protocol Analysis Module Based on TCP Splicing

The Protocol Analysis Module of Service Selection Gateway (SSG) is a scheme that it can work out the URL which user requests before user in connection with the real server, and finishes the access control and route work according to the user privilege. After giving an analysis to the performance requirement of Service Selection Gateway (SSG), the available TCP splicing technique is discussed, presented an improved method and done some research on the problem of sequence space mapping. Finally this method to the application-layer protocol analysis module is applied. It has been proved that the method is of good efficiency by practice.