Hello all, I would like to know if stunnel is able to encrypt a SIP message (UDP or TCP => TLS...) For example: Terminal A can send/receive SIP messages on transport layer UDP or TCP but not TLS. Server B can send/receive SIP messages only in TLS.   If terminal A sends a SIP REGISTER message to Server B, does stunnel is able to intercept the message and transform it ? port 5060 => port 5061 TCP => TLS sip uri => sips uri Do you think it's possible with stunnel ? Thank you very much for your input. Regards Une messagerie gratuite, garantie à vie et des services en plus, ça vous tente ? Je crée ma boîte mail www.laposte.net