Q: How to setup DNS for Caching Service in macOS Server?

Hi everybody.

I Have a macOS Server serving the Caching Service to my LAN (subnet 192.168.10.xxx/24), but my infrastructure work with 2 separate WAN: one for the server (for mailing, vpn, ...), and the other for the client.

macOS Server is also the DHCP and DNS server for my LAN.

In the Caching Service I read that I could make cache avaible also for another network by configuring DNS Server (bing???).

How can I configure DNS Server in macOS Server to serve Caching Service avaible in the 2 WAN and for all the client?

There is a terminal command to do this in proper way?

THanks everyone.