Patent ID: 7903657
Filing Date: 2011-03-08
Classification: H04L

Abstract:
1. A method of classifying a type of an application being used on an IP (Internet Protocol) network based on a packet transmitted over the network to calculate an application constitution ratio, comprising: a step of providing a storage for storing statistical information of the packet; a reception step of receiving the packet; a data gathering step of storing in the storage statistical information on at least a TCP (Transmission Control Protocol) flag and a TCP packet size of the packet received in said reception step; a first classification step of using a first mathematical equation on the basis of the statistical information on the TCP flag stored in the storage to classify the application into two types; a second classification step of using a second mathematical equation on the basis of the statistical information on the TCP packet size stored in the storage to classify the application into two other types; and a third classification step of classifying the application into four types in dependence upon a result of said first and second classification steps, wherein said data gathering step stores a first total number of packets having a syn flag and a second total number of packets having both a syn flag and an ack flag as the storage statistical information, and wherein said first classification step: