One of the common steps taken to secure a WordPress installation is to restrict access to wp-login.php using .htaccess rules. This restricts who can login to the website by specifying which networks can and blocking everything else.
For example, this would restrict access to wp-login.php for all networks except for 184.108.40.206 and 220.127.116.11
order deny, allow deny from all allow from 18.104.22.168 allow from 22.214.171.124
But this won’t work when the website is connected through CloudFlare – as all requests will be coming through the CloudFlare network.
Instead, you can use the following
SetEnvIf X-FORWARDED-FOR 126.96.36.199 allow SetEnvIf X-FORWARDED-FOR 188.8.131.52 allow order deny,allow deny from all allow from env=allow