What type of server do you have? Dedicated VPS, or are you a Shared Web Hosting? Assuming you've gotten all the IP's you must be on Dedicated or VPS. I suggest installing CSF or APF firewall. They are Iptable scripts that can stop/block IP addresses. If you have the the money (and your data-center offers it) you can always setup a hardware firewall such as a Cisco Guard to help filter legitimate traffic.
Good Luck man!
|