Setup a proxy server as WAF server which would be mediator between traffic and original server. Also DNS server should also be setup in such a way that original server settings should not be seen instead proxy server should be seen.
Hi :)
I can help you to setup a WAF server in-front of your actual server.
Sample Layout :
Server 1 (Proxy with PFSense Firewall Installed )
Server 2 ( Orginal Server for hosting your applications)
Please contact me if you have any questions