Asterisk - TLS version matrix?

We’re using SIP over TLS but Asterisk 13 which we’re currently on is limited to TLS 1.0

We hope to upgrade soon. Is there a matrix which outlines which TLS versions are supported by which versions of Asterisk?

Asterisk 13 (at least as far back as 13.23, the oldest one on GitHub) supports TLS V1.2. My impression is that the versions supported are determined by the openssl version used, not by Asterisk.

you are right. You have to check your OpenSSL versión and check wich TLS protocol version support.

Should’ve specified that as Asterisk 13.1.x shipped with Ubuntu 16.04 LTS
Ubuntu’s packaging of Asterisk is absolutely atrocious.

I’ll try to see if it supports TLS 1.2 or even 1.3

You can specify it in pjsip.conf under [transport_tls]:
method=tlsv1_2 ;or tlsv1 or tlsv1_1

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