On Fri, 2021-07-16 at 12:08 +0200, Thomas Mieslinger via Pdns-users
wrote:
> Suggestions from older threads (Klaus Darrilon):
> - Put that zone in a more efficent Backend (he suggested lmdb)

Good idea.

> - Put that zone in a more efficent Software (he suggested nsd) and use
> dnsdist to route the traffic to the alternate Software

Also a good idea.

> Very old suggestion:
> - Use a firewall uint32 match to lock out queries to the attacked zone.

Should work, bit more work to manage.

> Crazy idea:
> - enable DNSSec on that zone
> - setup pdns recursor or similar add delegate the zone to it
> - pdns-recursor should now be able to efficiently calculate the
> NXDOMAINs based on NSEC/NSEC3 information

Recursor can do that, but it cannot serve the zone to the world. It is
not an Authoritative server.

So, sadly, this suggestion does not work.

Kind regards,
-- 
Peter van Dijk
PowerDNS.COM BV - https://www.powerdns.com/

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