On Tue, Jul 17, 2018 at 03:24:22PM +0430, Hamed Haghshenas wrote: > Could you please let me know how handle these large DDOS attacks? Hi Hamed, Please take a look at https://dnsdist.org/guides/dynblocks.html#dynblockrulesgroup This is specifically meant for the case of many different IP addresses attacking you. Good luck!