I have been running a production server with Ubuntu 18 installed. Recently, I found that my web application was not allowed on some of the firewalls installed at the customer location.
I found that my server is communicating at TLSv1.0, TLSv1.1, TLSv1.2 protocols, I assume that the firewall setting is allowing communication with the server on TLSv1.3 protocol only.
As Ubuntu 18 is shipped with OpenSSL version 1.1.0, and to make server support TLS v1.3 I have to upgrade OpenSSL to version 1.1.1 which is the latest one.
As this is a production server running nginx server, I don't want to directly try anything on the server.
root@energy-prod:~# nginx -v
nginx version: nginx/1.14.0 (Ubuntu)
What is the best way to upgrade OpenSSL to v1.1.1 without disturbing any other settings of the server?