›› 2011, Vol. 24 ›› Issue (3): 31-.

• Articles • Previous Articles     Next Articles

Research on a Filter System Based on the Netfilter L7-filter

 QI Xing-Cheng, LIU Wen-Bo   

  1. (Measuring and Testing Department,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
  • Online:2011-03-15 Published:2011-03-11

Abstract:

QQ software filter of the existing router is based on traditional port methods.It cannot forbid QQ to login effectively when QQ login uses the proxy.In order to keep QQ software off-line,this paper analyzes the QQ protocol and propose a new QQ protocol regular expression.Taking the advantage of l7-filter and Netfilter,it solves the problem of the QQ software filter effectively.

Key words: firewall;application layer filtering;QQ protocol analysis

CLC Number: 

  • TP393