Keywords: Columbus, SSL, TLS, TLS1.2
Support for TLSv1.2 or higher was added in Columbus 2.9.1.
Extract from Columbus 2.9.1 release notes:
''Security enhancement: updated nginx server and upgraded to TLSv1.3 (COL-1967)''
In order to make use of TLSv1.2 or above you will need to be running Columbus 2.9.1 or higher.