How to White-List an IP in ConfigServer Security & Firewall (CSF)
ConfigServer Security & Firewall (CSF) allows you to manage your iptables configuration. CSF is a simplified interface that makes it easy to add or remove IP addresses from your firewall.
To Whitelist a IP address you must log into your WHM Through https://yourdomain.com.au/whm with your credentials.
Once you have logged in this will return you to the main page of your WHM on the left hand side menu left click ‘ConfigServer Security&Firewall’ This will open the web interface for configuring (CSF)
First of all we have to check to see why the IP was listed in the first place. In the ‘Search for IP’ enter the IP that is suspected to being blocked then left click ‘Search for IP’
ConfigServer Security & Firewall (CSF) will then query’s the database and provides you the following response DENYIN/DENYOUT shows that the IP is blocked and then provides the reason why it was blocked in this example it shows the unauthorised access to SMTP once you are happy with the results Left click ‘Return’
Once you have reached this page go to ‘Quick Allow’ and type in the IP address that is blocked then Left Click ‘Quick Allow’
Most of the options are explained, but to configure a firewall, there are three options that are most important : Quick Allow, Quick Deny, and Quick Ignore. Simply enter the IP address into the coloured box, and left click the ‘Quick Allow’, ‘Quick Deny’ or ‘Quick Ignore’.
Once this is completed this will allow this IP address to both access your server and websites located on the server.