I think network security best practices addresses that issue. Keep network management interfaces off unrestricted local area or routeable networks. Huge swaths

I think network security best practices addresses that issue. Keep network management interfaces off unrestricted local area or routeable networks. Huge swaths of popular software as well as very expensive hardware have many unresolved security issues. There is nothing you can do to make a lot of that stuff secure short of putting them on their own isolated network and explicitly controlling all ingress/egress traffic to it.