[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Linphone-developers] TLS Network Option

From: Simon Morlat
Subject: Re: [Linphone-developers] TLS Network Option
Date: Mon, 30 Jan 2012 10:08:19 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:8.0) Gecko/20111124 Thunderbird/8.0

Hi Ahmed,

To clarify, SIP/TLS is really SIP over TLS, that is there is a TCP/TLS connection made on the SIP server, then after the SSL handshake SIP messages are totally encrypted both ways. No SIP messages are exchanged before the SSL handshake.
The media streams (which are RTP packets over UDP), are established in different channels and are not encrypted by default.
In order to encrypt them too, you need to activate SRTP encryption in the settings. SRTp is an encryption protocol dedicated to RTP streams, where only the contents of the packet is encrypted (that is voice data), not the header (header contains sequence number, payload type number, timestamp).

Best regards,


Le 29/01/2012 15:06, Ahmed Refaey a écrit :
I need a confirmation on choosing TLS option, Do the early first packages used for handshaking are sent using UDP before switching to TLS? 

Ahmed El-Refaey
Senior Software Engineer
R&D Team
Cloud Niners Ltd. |

Cellular: (+2) 010 005 73 220
Mansoura: (+2) 050 234 70 81
Cairo:    (+2) 022 368 34 60
Fax:      (+2) 022 268 34 63
14 Manchester Square, W1U 3PP, London, United Kingdom
4 Abdelhamid Badawy, Sheraton Bldgs, Heliopolis, Cairo, Egypt

Linphone-developers mailing list

reply via email to

[Prev in Thread] Current Thread [Next in Thread]