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Rules for primary external DNS behind NAT

NormanGraziani
Hi.  Here's the configs:

ASL5 with INT-a to ISP and INT-B to internal LAN.
Primary DNS server for my zones for external.
Internal DNS server for LAN resolving (forwarded to ISP resolvers).
NOT using DNS proxy in ASL5.


I'd like to move my external, primary DNS server behind the firewall and NAT it.  I'm looking for some guidance on the rules needed for:

Allowing resolver requests for my domains from external DNS clients .
and
Allowing automated zone updates from my primary to a secondary DNS server at another ISP.

Any thoughts?

Thank you!

Norman Graziani
Normang@normie.com


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