Journal article

MATOUŠEK Petr, RYŠAVÝ Ondřej and KMEŤ Martin. Fast RTP Detection and Codecs Classification in Internet Traffic. The Journal of Digital Forensics, Security and Law. 2014, vol. 2014, no. 2, pp. 99-110. ISSN 1558-7215. Available from: http://ojs.jdfsl.org/index.php/jdfsl/issue/view/37
Publication language:english
Original title:Fast RTP Detection and Codecs Classification in Internet Traffic
Title (cs):Rychlá detekce RTP a klasifikace kodeků v internetovém provozu
Pages:99-110
Place:US
Year:2014
URL:http://ojs.jdfsl.org/index.php/jdfsl/issue/view/37
Journal:The Journal of Digital Forensics, Security and Law, Vol. 2014, No. 2, US
ISSN:1558-7215
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Keywords
network forensics, RTP detection, codec identification, VoIP
Annotation
This paper presents a fast multi-stage method for on-line detection of RTP streams and codec identification of transmitted voice or video traffic. The method includes an RTP detector that filters packets based on specific values from UDP and RTP headers. When an RTP stream is successfully detected, codec identification is applied using codec feature sets. The paper shows advantages and limitations of the method and its comparison with other approaches. The method was implemented as a part of network forensics framework NetFox developed in project SEC6NET. Results show that the method can  be  successfully used for Lawful Interception as well as for network monitoring. 
BibTeX:
@ARTICLE{
   author = {Petr Matou{\v{s}}ek and Ond{\v{r}}ej Ry{\v{s}}av{\'{y}} and
	Martin Kme{\v{t}}},
   title = {Fast RTP Detection and Codecs Classification in Internet
	Traffic},
   pages = {99--110},
   journal = {The Journal of Digital Forensics, Security and Law},
   volume = {2014},
   number = {2},
   year = {2014},
   ISSN = {1558-7215},
   language = {english},
   url = {http://www.fit.vutbr.cz/research/view_pub.php?id=10641}
}

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