Generate Wildcard SSL certificate using Let’s Encrypt/Certbot
https://medium.com/@saurabh6790/generate-wildcard-ssl-certificate-using-lets-encrypt-certbot-273e432794d7
What is Wildcard SSL Certificate?
https://aboutssl.org/what-is-wildcard-ssl-certificate/
Let's Encrypt Getting Started
https://letsencrypt.org/getting-started/
Certbot
https://certbot.eff.org/lets-encrypt/centosrhel7-apache https://certbot.eff.org/docs/using.html#dns-plugins
https://jazzduets.com/collections/exercises/products/john-coltrane-pentatonic-exercises-theory-digital-download https://www.youtube.com/watch?v=R4RnvI3eSzY
https://www.youtube.com/watch?v=6fHgnGhRRtg
https://www.youtube.com/watch?v=0i0GbUb3Ukk&t=12s