The VoIP communication security protocols

Piotr Zawadzki


The presently offered VoIP services pose a serious security problem – they are vulnerable to eavesdropping, impersonation, session hijacking and denial of service attacks. The paper presents security analysis of the proposed VoIP protocol stack, including signaling protocol SIP, key management protocols ZRTP and MICKEY and transport layer security protocol SRTP. The VoIP network security subsystem upgrade path is also described.


VoIP; security; protocols

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