I awoke today with news that Let’s Encrypt to revoke 3 million certificates on March 4 due to software bug. I will need to update my Lets Encrypt certificate on my server but the catch is because Cloudflare handle the HTTS certificate any attempt to renew my HTTPS certificate will be blocked by Cloudflare. How can I renew my Lets Encrypt Certificate
This is how I setup Certification Authority Authorization (CAA) DNS record(s) to prevent https cert issue/misuse on my domain and 1 sub domain.
Here is how I added two subdomains (one pointing to a new UpCloud VM and the other pointing to an NGINX subsite) on Ubuntu 18.04.
This guide will aim to inform you of strong cryptographic protocols and ciphers to use on a web server on Ubuntu 16.04 and NGINX.
Read the full article here: https://fearby.com/article/setting-strong-ssl-cryptographic-protocols-and-ciphers-on-ubuntu-and-nginx/