I have a Deco BE16000 set up in Router mode, behind an AT&T BGW320 in IP Passthrough mode (no bridge mode). The BGW router has its own configurable firewall. The specs on the BE16000 say it has an "SPI Firewall" - but I see no way to access or configure the Deco's firewall in the Deco app.

I don't want two firewalls running and would like to disable one of them but I don't even know if the Deco is running a firewall or how it's configured.

Do I have to subscribe to HomeShield to access the firewall?