Patent Document ID: 20090187653
Application ID: 12018676
Patent Flag: 0

Claim One:
1. A system for identifying P2P applications on a network based on behavioral-signatures, comprising: a retrieving unit configured to retrieve a packet header of each packet from a packet trace collected from the network; a filter configured to filter out all the irrelative packets from the retrieved packets and allow packets equipped with a target IP or IP-port pair to pass through; a first sequence generating unit configured to generate a first discrete-time sequence from the packets equipped with the target IP or IP-port pair; a second sequence generating unit configured to generate a second discrete-time sequence from the packets equipped with the target IP or IP-port pair; a sequence processor configured to generate frequency-domain characteristics of the first and the second sequences; and an analyzer configured to capture the frequency-domain characteristics so as to identify the P2P applications based on the frequency-domain characteristics.