Publication detail

Netfox Detective: A tool for advanced network forensics analysis

PLUSKAL, J. MATOUŠEK, P. RYŠAVÝ, O. KMEŤ, M. VESELÝ, V. KARPÍŠEK, F. VYMLÁTIL, M.

Original Title

Netfox Detective: A tool for advanced network forensics analysis

Type

article in a collection out of WoS and Scopus

Language

English

Original Abstract

Network forensics is a process of capturing, collecting and analysing network data for the purposes of information gathering, legal evidence, or intrusion detection. The new generation internet opens novel opportunities for cybercrime activities and security incidents using network applications. Security administrators and LEA (Law Enforcement Agency) officers are challenged to employ advanced tools and techniques in order to detect unlawful or unauthorized activities. In case of serious suspicion of crime activity, network forensics tools and techniques are used to find out legal evidences in a captured network communication that prove or disprove suspect's participation on that activity. Today, there are various commercial or free tools for network forensics analysis available, e.g., Wireshark, Network Miner, NetWitness, Xplico, NetIntercept, or PacketScan. Many of these tools lack the ability of successful reconstruction of communication when using incomplete, duplicated or corrupted input data. Investigators also require an advanced automatic processing of application data that helps them to see real contents of conversation that include chats, VoIP talks, file transmission, email exchange etc. Our research is focused on design and implementation of a modular framework for network forensics with advanced possibilities of application reconstruction. The proposed architecture consists of (i) input packet processing, (ii) an advanced reconstruction of L7 conversations, and (iii) application-based analysis and presentation of L7 conversations. Our approach employs various advanced reconstruction techniques and heuristics that enable to work even with corrupted or incomplete data, e.g. one-directional flows, missing synchronization, unbounded conversations, etc. The proposed framework was implemented in a tool Netfox Detective developed by our research group. This paper shows its architecture from functional and logical point of view and its application on reconstruction of web mail traffic, VoIP and RTP transmissions.

Keywords

network forensics, forensic tools, network traffic analysis, Web mail, SIP, RTP

Authors

PLUSKAL, J.; MATOUŠEK, P.; RYŠAVÝ, O.; KMEŤ, M.; VESELÝ, V.; KARPÍŠEK, F.; VYMLÁTIL, M.

RIV year

2015

Released

15. 4. 2015

Publisher

University of Defence in Brno

Location

Brno

ISBN

978-80-7231-997-8

Book

Proceedings of Security and Protection of Information (SPI) 2015

Pages from

147

Pages to

163

Pages count

17

URL

https://www.fit.vut.cz/research/publication/10863/

BibTex

@inproceedings{BUT119842,
  author="Jan {Pluskal} and Petr {Matoušek} and Ondřej {Ryšavý} and Martin {Kmeť} and Vladimír {Veselý} and Filip {Karpíšek} and Martin {Vymlátil}",
  title="Netfox Detective: A tool for advanced network forensics analysis",
  booktitle="Proceedings of Security and Protection of Information (SPI) 2015",
  year="2015",
  pages="147--163",
  publisher="University of Defence in Brno",
  address="Brno",
  isbn="978-80-7231-997-8",
  url="https://www.fit.vut.cz/research/publication/10863/"
}