Name
Abstract | ||
|---|---|---|
Voice over Internet Protocol (VoIP) applications based on peer-to-peer (P2P) communications have been experiencing considerable growth in terms of number of users. To overcome filtering policies or protect the privacy of their users, most of these applications implement mechanisms such as protocol obfuscation or payload encryption that avoid the inspection of their traffic, making it difficult to identify its nature. The incapacity to determine the application that is responsible for a certain flow raises challenges for the effective management of the network. In this paper, a new method for the identification of VoIP sessions is presented. The proposed mechanism classifies the flows, in real-time, based on the speech codec used in the session. To make the classification lightweight, the behavioral signatures for each analyzed codec were created using only the lengths of the packets. Unlike most previous approaches, the classifier does not use the lengths of the packets individually. Instead, it explores their level of heterogeneity in real time, using entropy to emphasize such feature. The results of the performance evaluation show that the proposed method is able to identify VoIP sessions accurately and simultaneously recognize the used speech codec. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1109/TPDS.2012.316 | IEEE Trans. Parallel Distrib. Syst. |
Keywords | Field | DocType |
considerable growth,behavioral signature,used speech codec,peer-to-peer voip sessions,speech codec,certain flow,new method,codec properties,internet protocol,proposed mechanism,voip session,data privacy,distributed applications,network monitoring,network management,payloads,protocols,entropy,internet telephony | Peer-to-peer,Computer science,Network packet,Computer network,Real-time computing,Encryption,Information privacy,Obfuscation,Network management,Codec,Distributed computing,Voice over IP | Journal |
Volume | Issue | ISSN |
24 | 10 | 1045-9219 |
Citations | PageRank | References |
5 | 0.49 | 19 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| João V. Gomes | 1 | 46 | 6.74 |
| Pedro R. M. Inácio | 2 | 172 | 12.35 |
| Manuela Pereira | 3 | 66 | 11.57 |
| Mario M. Freire | 4 | 32 | 7.00 |
| Paulo P. Monteiro | 5 | 156 | 29.69 |