VoIP is an acronym for "Voice over IP (or Internet Protocol)" which is a term that encapsulates the technologies that enable telephonic communication using the Internet as the carrier network rather than the traditional publicly switched telephone network.

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How to pentest DTLS-SRTP?

I'm currently working on a penetration test about DTLS-SRTP strengths and weaknesses. But I'm stuck on an eavesdropping test using Wireshark. Yes, it's protected by SRTP, but: What's DTLS actually ...
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Does ZRTP provide useful protection, given that the SAS is not verified?

Firstly, some important backstory. I'm producing a corporate version of an IM/VOIP/Screensharing client using the Open Source Jitsi. We are going to be using a central server and have already ...
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Is facebook to facebook (mobile application call ) encrypted?

I understand facebook uses WebRtc to send voice data packet in network if any one end client is on the browser. Use of DTLS packets can be seen in captured (wireshark) file. But in case of mobile app ...