Title: A study on methodology on VoIP-based communication investigation through network packet analysis

Authors: Indrajeet Singh; Naveen Kumar Chaudhary

Addresses: School of Doctoral Studies and Research, National Forensic Sciences University, Sector 9, Gandhinagar-382007, Gujarat, India ' School of Cyber Security and Digital Forensics, National Forensic Sciences University, Sector 9, Gandhinagar-382007, Gujarat, India

Abstract: Nowadays mobile communication is changing its definitions from a global system for mobile communication (GSM) and code division multiple access (CDMA) communication mechanism to internet-enabled communication mechanisms. In GSM and CDMA technology mobile phone users have to depend upon local service providers. Sophisticated criminals are also aware of the law enforcement agencies' tactics for GSM/CDMA-based call investigations. VoIP is a voice over internet protocol, an internet-based calling mechanism. VoIP is one of the solutions used by sophisticated criminals for hiding themselves from the ordinary communication mechanism and is an internet-based calling service. In this research, the methodology is discussed and implemented for the identification of VoIP communication using network packet capture and monitoring. This research will cater to the needs of VoIP investigations using network-based packet capturing, analysis and investigation.

Keywords: voice over internet protocol; VoIP; session initiation protocol; SIP; real-time protocol; RTP; real-time control protocol; RTCP; user datagram protocol; UDP; Wireshark; X-Lite; global system for mobile communication; GSM.

DOI: 10.1504/IJESDF.2023.133187

International Journal of Electronic Security and Digital Forensics, 2023 Vol.15 No.5, pp.443 - 455

Received: 24 Mar 2022
Accepted: 05 Oct 2022

Published online: 01 Sep 2023 *

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