Docker networking on Synology

I’m using Docker on a Synology NAS. I have a query about how networking works.

My home pcs operate are configured to use network. Docker is using I followed some guides about securing my Synology and accidentally set the Synology firewall up so that Docker containers lost internet access. I fixed the problem by setting a rule to allow all traffic from

Is this something I should need to do? I don’t mind having the rule as long as I haven’t incorrectly opened something up too much.

Sorry if this is more of a Synology question. I asked on Reddit r/Synology and they thought I shouldn’t need the rule. Although the posters there seem to use a more complex setup (ngnix I think they said)

Thanks, Jack