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Security Analysis System to Detect Threats on a SIP VoIP Infrasctructure Elements

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Author(s): Filip Rezac | Miroslav Voznak | Karel Tomala | Jan Rozhon | Jiri Vychodil

Journal: Advances in Electrical and Electronic Engineering
ISSN 1336-1376

Volume: 9;
Issue: 5;
Start page: 225;
Date: 2011;
Original page

Keywords: SIP server | Safety Test System | Flood Attack | scanning | monitoring | SPIT | countermeasures | data manipulation.

ABSTRACT
SIP PBX is definitely the alpha and omega of any IP telephony infrastructure and frequently also provides other services than those related to VoIP traffic. These exchanges are, however, very often the target of attacks by external actors. The article describes a system that was developed on VSB-TU Ostrava as a testing tool to verify if the target VoIP PBX is adequately secured and protected against any real threats. The system tests the SIP element for several usually occurring attacks and it compiles evaluation of its overall security on the basis of successfully or unsuccessfully penetrations. The article describes the applications and algorithms that are used by system and the conclusion consists recommendations and guidelines to ensure effective protection against VoIP PBX threats. The system is designed as an open-source web application, thus allowing independent access and is fully extensible to other test modules.

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