How can I check currently installed and in use versions of SSL and TLS?
Strangely I couldn't find an answer online.
Using Ubuntu 18.04.
Edit: Thanks all! I am asking this as I have trouble connecting from one ubuntu 18.04 server running curl to another with ftps server (vsftp). I get version error every time no meter which TLS version I ran curl with.
- TLSv1.3 (OUT), TLS handshake, Client hello (1):
- error:1408F10B:SSL routines:ssl3_get_record:wrong version number
- Closing connection 0
Best Answer
You can check the installed package version with
dpkg -l | grep -i openssl
. The actual TLS/SSL version used depends on what the server offers or what is negotiated between server and client in any given session.