Generally, recursive queries should only be allowed from specific IP addresses." ISPs should only provide DNS services to their own customers, according to Kristensen.

Mitigation Generally speaking, you’d notice a nonsense name attack when your recursive name server starts running out of recursive query slots, as evidenced by the syslog message earlier.

A recursive name server resolving a domain name in one of your zones will try to query the authoritative name server closest to it, so geographical distribution will tend to provide better ...

Recursive DNS servers are provided by ISPs in order to increase efficiency and performance with the resolution of DNS queries. Sometimes, however, open recursive resolvers can be abused and used ...

To mitigate potential DoS attacks we do not want recursion to work for any DNS query originating outside the DMZ but of course the DMZ DNS servers are authoritative for company.com so they need to ...

Because modems configured as open recursive servers will answer DNS queries from anyone on the Internet, they can be used in what’s known as a DNS amplification attack.

Graph search Recursive searches are now available in the aggregation pipeline, allowing you to perform certain types of graph searches on a collection.