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Study of the security aspect of networks based on SIP and H323 protocols


Ed-daoui Ilyas, Mazri Tomader


Vol. 16  No. 9  pp. 69-75


Mainly represented by SIP or H323 VoIP protocols and implementations involve a number of vulnerabilities, particularly related to their complexities and in the face of interoperability of telephony equipments. One of them is the absence of clear standard for negotiating voice encryption keys, resulting in large deployments significant gaps in terms of confidentiality and integrity of conversations and availability service. Our job is to study these protocols dedicated to VoIP applications and offer security solutions to cure the vulnerabilities of these networks.


SIP, H323, VoIP threats, VoIP Vulnerabilities, security.