Not resolving a (duckdns.org) domain that points to a non-public IP

[ik13]

What the title says.

I currently have pfsensetest.duckdns.org (created just to illustrate the issue) pointing to 192.168.0.210 and pfSense fails to resolve it.

Using dig (from a machine behind pfSense) with the same DNS servers that are set in pfSense resolve it fine.

[johnpoz]

@ik13 that would be rebind protection.

https://docs.netgate.com/pfsense/en/latest/services/dns/rebinding.html#dns-rebinding-protections

[ik13]

Thank you, sir!

[johnpoz]

@ik13 your welcome - hope your all sorted now. If not happy to help.