Sometimes it becomes necessary to prohibit access to the site or part of it from certain IP addresses.
In this case, you need to create a file .htaccess with directives in the desired directory. For example, to deny access from the IP address 172.16.16.16:
Order Allow,Deny
Allow from All
Deny from 172.16.16.16
Now, when trying to access the site from the IP address 172.16.16.16, the visitor will receive a 403 error or your page for this error.
Specifying part of the address as 172.16.16 will restrict access from the subnet 172.16.16/24.