What is Cloudflare Firewall Rules?
Cloudflare Firewall Rules is another firewall tools offered by Cloudflare which announced in October 2018. It is a powerful and flexible security tool to filter web application traffic.
Read More: https://blog.runcloud.io/cloudflare-firewall-rules/
https://turbofuture.com/internet/Cloudflare-Firewall-Rules-for-Securing-WordPress
https://10alert.com/how-to-use-cloudflare-to-secure-your-wordpress-site/