Cybersecurity starts before the firewall: with the cables, ports and switches...

https://www.bookmarking-maze.win/cybersecurity-can-t-outrun-a-messy-network-a-dodgy-patch-lead-can-make-vpn

Cybersecurity starts before the firewall: with the cables, ports and switches carrying every connection. See how overlooked basics can open a way in, like default switch credentials letting an intruder move across the network.