On 3/17/25 20:18, Willem Toorop wrote:
But many zones are still not DNSSEC signed. Making sure that responses are 
answered by the correct authoritative name servers (NS revalidation), protects 
the unsigned zones

The thing is, there is no "making sure".

If the referral for an insecure delegation is spoofed, then NS revalidation 
won't help you, as any serious attacker will set up their fake zones to contain 
an apex RRset different from the original one.

This is actually the main point I've never understood about revalidation. (What 
definition if "validation" is actually being used here? It's more like a 
consistency check.)

Best,
Peter

--
https://desec.io/

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