AZTCOFW / TECHNICAL GUIDE
Requirements
This feature is only supported by the DNS Resolver. If the firewall is currently using the DNS Forwarder, convert to the DNS Resolver before starting this procedure.
Pick a DNS over TLS upstream provider, such as a private upstream DNS server or a public server like Cloudflare, Quad9, or Google public DNS. Note the addresses of the servers and their associated hostnames.
Imported from the AZTCOFW knowledge base on 2026-09-05. Historical guidance may refer to older software versions. Confirm applicability before changing a production system.
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