If you are using CloudFlare and Config Server and Firewall (CSF) then you may wonder how to whitelist the CloudFlare IP’s since CSF has a few different allow and ignore locations.
According to CloudFlare post on “How do I whitelist CloudFlare’s IPs in .htaccess?“, at the bottom of this knowledge base article it states:
Please note: These ips should also be whitlelisted in /etc/csf.allow and /etc/csf.ignore.
If you want the IP’s listed in csf.allow automatically to be used by csf.ignore, then set the option IGNORE_ALLOW to be 1.