How to unblock an IP from the server

Lets see how to unblock an IP from the server Firewall

At first grep the IP whether it is blocked in the server or not

#csf -g <IPaddress>

If this query shows that the IP is blocked in the server,  Then unblock the IP from the server using the below command

#csf -dr <IPaddress>

It will drop the IP from the server.