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

https://kilo-wiki.win/index.php/Should_Security_Cameras_Be_Wired_or_Wireless_for_Reliability%3F

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.