This project is an assignment from a pre-employment test for the company Ad Hoc titled "Provision".
Overall there is only one notable aspect for this excercise.
Initially I tried adding the following to nginx.conf:
ssl_protocols TLSv1.2 TLSv1.3;
But nginx would fail to start and the following message clearly stated that TLSv1.3 was the issue:
nginx: [warn] invalid value "TLSv1.3" in /etc/nginx/nginx.conf:75
After a look at the VM and some investigation, I found the version of nginx to be the culprit. The latest available package for CentOS 6.9 is nginx/1.10.3 and only since nginx/1.13 support has been added for TLSv1.3.