VoIP-aware network attack detection based on statistics and behavior of SIP traffic

Abstract

VoIP is one of the most popular Internet services. However, VoIP service is vulnerable to several potential security threats. Moreover, existing IP-based security solutions are unable to inspect call setup information. In this paper, we propose a VoIP-aware attack-detection scheme. The proposed scheme is able to detect VoIP network attacks including VoIP DoS and SPAM. It can detect VoIP DoS attacks with low false negatives using a statistics-based detection algorithm and can recognize SPAM with low false positives using a caller behavior-based detection algorithm. We have included experimental results to confirm the proposed scheme.