Title
Non-Conforming Behavior Detection For Voip-Based Network Systems
Abstract
This work proposes a detection scheme that identifies non-conforming behavior in a VoIP network, based on statistical analysis and hypothesis testing. VoIP networks are a popular, low-cost alternative for telephony that offer lower rates especially for long-distance calls. Other services such as FollowMe, enhance the traditional voice-oriented nature of these networks. Consequently several security concerns such as fraud calls, are related to the high availability required by a VoIP system. Fraud calls account for an average loss of 3% to 5% of the operators' revenue. Thus the detection and prevention of the users from behaving in a non-conforming way, becomes crucial. A trustworthy and secure management and billing scheme is necessary, to guarantee the proper operation. This work proposes a behavioral control scheme for the VoIP clients. An initial training period defines the normal behavior. Then statistical analysis and t-testing is employed to extract results regarding the users' profiles, with pre-defined confidence levels. A Buffer zone creates a more flexible decision-making process. The scheme also offers the ability to configure its parameters, in order to react appropriately under different network conditions and detect possible misuses. It is implemented and its rational operation is verified via several simulation scenarios.
Year
DOI
Venue
2016
10.1109/ICC.2016.7511103
2016 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC)
Keywords
Field
DocType
VoIP fraud detection, Intrusion Detection System, T-testing, non-conforming behaviour, security
Revenue,Computer security,Computer science,Computer network,Quality of service,Operator (computer programming),Telephony,High availability,Intrusion detection system,Statistical hypothesis testing,Voice over IP
Conference
ISSN
Citations 
PageRank 
1550-3607
1
0.36
References 
Authors
5
4
Name
Order
Citations
PageRank
Panagiotis Galiotos182.91
Christos-Nikolaos Anagnostopoulos2103491.30
Tasos Dagiuklas338150.51
Stavros A. Kotsopoulos455062.30