Cybersecurity can unravel before a firewall gets involved. This article...

https://fun-wiki.win/index.php/How_to_Pick_Patch_Leads_That_Do_Not_Cause_Packet_Loss

Cybersecurity can unravel before a firewall gets involved. This article explains why cabling, switch setup and access controls matter—and how default switch credentials can let an intruder move from one part of a network to another.