Originally published at: https://www.cyberciti.biz/faq/how-to-secure-apache-with-mod_md-lets-encrypt-on-ubuntu-20-04-lts/
How do I secure Apache with mod_md Let’s Encrypt on Ubuntu 20.04 and obtain a free TLS/SSL certificate? How do I secure Apache 2 with Let’s Encrypt on Ubuntu 20.04 LTS server?