https://wiki.linuxwall.info/ 2026-04-08T05:38:55+00:00 https://wiki.linuxwall.info/ https://wiki.linuxwall.info/lib/tpl/dokuwiki/images/favicon.ico text/html 2024-04-17T10:19:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.linuxwall.info/doku.php?id=en:ressources:dossiers:voip:sip_rtp&rev=1713363598&do=diff SIP and RTP : overview of a VoIP communication This page describes in detail the protocols used in a typical SIP/RTP communication with or without the use of TLS. First, I'm going to describe how a simple VoIP communication works with OpenSER acting as a Proxy/Registrar and two X-Lite clients. text/html 2024-04-17T10:19:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.linuxwall.info/doku.php?id=en:ressources:dossiers:voip:start&rev=1713363598&do=diff <nspages -title -exclude -subns > ~~DISCUSSION:off~~ text/html 2024-04-17T10:19:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.linuxwall.info/doku.php?id=en:ressources:dossiers:voip:tls_sips_rtps&rev=1713363598&do=diff Secure VoIP protocols: SIPS & SRTP Because the SIP and RTP protocols are not designed to be secure, the IETF has defined SIPS and SRTP. SIPS in an implementation of SIP over TLS(Transport Layer Security) to solve authentication, confidentiality and integrity problems. SRTP is a bit different and defines its own cryptography mechanisms.