offers support for TLS and SRTP to encrypt and secure signaling and media traffic
Such mechanisms may be implemented, for example, with the Secure Real-time Transport Protocol (SRTP) defined in RFC 3711.
SDES (Session Description Protocol Security Descriptions) for Media Streams and is a way to negotiate the key for Secure Real-time Transport Protocol.
However, the new generations of SBCs, armed with sufficient computing capacity, are able to offload this encryption function from other elements in the network by terminating SIP-TLS, IPsec, and/or SRTP.
Secure Real-time Transport Protocol, security profile for Real-time Transport Protocol
The recent publication of new VoIP encryption standards built into the protocol, such as ZRTP and SRTP, allow the VoIP client to run without the VPN overhead, integrating with standard features of VoIP PBX without having to manage both the VPN gateway and the PBX.
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The AirPort Express' streaming media capabilities use Apple's Remote Audio Output Protocol (RAOP), a proprietary variant of RTSP/RTP.
EvoStream Media Server delivers outbound media through RTMP, RTMPS, LiveFLV, RTSP with RTP or MPEG-TS, HLS, HDS and direct MPEG-TS.
Without the protection with SSL/TLS or IPSec, it will be easy for an attacker to capture the SIP signalling and RTP (Real-time Transport Protocol) traffic using tools like Wireshark.
The fundamental model with MSML is that the Media Server is an appliance that is specialized in controlling/manipulating media streams (usually RTP), and the application server is a separate unit that deals with making and breaking call connections, and controlling the application (or business) logic, so for example the application server would deal with the billing engine and logging systems.
It improves compression efficiency for interlaced content and is made transport-independent, making it able to be encapsulated in an MPEG transport stream or RTP packet format.
This allows to focus the decoding, that is, if you want to decode only VoIP calls but not the Web traffic then you configure Xplico to load only the RTP and SIP modules excluding the HTTP module.
ZRTP, a cryptographic key-agreement protocol using Secure Real-time Transport Protocol for encryption