Firewall
Firewall rule must be enabled on Datacenter and Node level for any container levle firewall rules to be active.
Here’s the policy on datacenter level which enables everything.

Here’s a checklist for enabling firewall rule on a container/VM
- enable Firewall on datacenter and host
- enable Firewall on the container under Firewall and add a policy
- under Network > check Firewall on
- for VM, it Hardware > Network Device