Defender for Endpoint Firewall Rules Not Applying to Devices

Hello Security Experts,

I’m currently deploying Microsoft Defender for Business and trying to enforce firewall configurations directly from the Defender portal.

However, I’ve noticed that the settings are not applying to any of the onboarded devices — nothing changes on the endpoints.

Do firewall rules in Defender for Endpoint require Intune to be enforced, or should they work standalone?
And if Intune isn’t used, what’s the best approach to apply consistent Defender firewall rules across devices?

Thanks,
Luca