I found one of challenge when running a public dns resolver(and authoritative name server if we're being target) is DNS Backscatter. Up till nowsaday I don't re

I found one of challenge when running a public dns resolver(and authoritative name server if we're being target) is DNS Backscatter. Up till nowsaday I don't really know how people solve this problem. Anyone can lighten me up on how to defend this kind of attack? I really want to run my own dns server