Docker network security / Portainer

I’m using Portainer as a visual / GUI interface for Docker management on my Mac.

I noticed that under the Network section of Portainer there are three Public networks showing up (bridge, host and none)…

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Portainer’s definition of “public” is…

This resource can be managed by any user with access to this endpoint.

I’m not entirely certain what that means, but it doesn’t sound so secure.

I came across a Portainer tutorial on YouTube and when the tutor clicked on the networks section the same 3 networks were not public, but administrator only…

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I would like to know if I have a potential security issue with these networks being set to public (I can’t find a way in Portainer to set them to admin only).

Would love to hear from @George or @JonL on this as they’re both Portainer users I believe.

Much appreciated!