Cybersecurity can unravel before a firewall ever gets involved. A VPN handshake...

https://city-wiki.win/index.php/What_Are_the_Security_Risks_of_Messy_Cable_Management_in_a_Rack%3F

Cybersecurity can unravel before a firewall ever gets involved. A VPN handshake that keeps failing might come down to a damaged patch lead, not a complex attack