VoIP security involves protecting an organization's voice traffic carrying IP network from exploits ranging from viruses, spam, and other malware to denial-of-service attacks, intrusion, fraud, and theft, to eavesdropping.
The IETF-developed Session Initiation Protocol (SIP) and Real-time Transport Protocol (RTP), often used in VoIP for call signaling and voice-message delivery, respectively, do not offer adequate, inherent security features. Therefore, as in the data world, a host of security devices, precautions,...
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