Need help I am new to all this and wish to thank everyone for helping me a long this last year it been awesome ..what's the best way to block ips that trying to flood our servers using udp flooding we are looking at security with ACL but...

Can anyone help with this? we found when client's use our game servers the router ips reports DDOS_TYPE_UDP_FLOOD here some of what we are seeing and some time our own lan ip sometime show's up in the list we host gaming servers and teamspeaks server...