Recommendations for securing a public DNS server?

Question

Domain Name System

There is a public dns server that responds to a specific zone to support the operation of sites.
What recommendations can you give about security, and in general, secure DNS server settings?

Answer 1

Good afternoon.
A lot of security recommendations, the so-called hardening, you can find here
https://www.cisecurity.org/cis-benchmarks/
You will at least need hardening for your OS and for the DNS server itself.