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Secure Real-time Transport Protocol
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Application Layer — VoIP & Streaming
Protocol Overview
Full Name
Secure Real-time Transport Protocol
Abbreviation
SRTP
OSI Layer
Application Layer
Category
VoIP & Streaming
Default Port
dynamic
RFC
RFC 3711
About SRTP
Encrypted extension of RTP providing confidentiality, message authentication, and replay protection for real-time audio and video. Mandatory in WebRTC and recommended for all VoIP deployments.
Application Layer
VoIP & Streaming
Standards Reference
SRTP is defined in RFC 3711, published by the Internet Engineering Task Force (IETF). RFCs are the official standards documents for internet protocols and are freely available for public review.