A secure network starts with the cables, ports and switches people often...

https://wiki-byte.win/index.php/How_to_Build_a_Wired_Foundation_That_Makes_Wireless_Actually_Work

A secure network starts with the cables, ports and switches people often overlook. This article shows how a bad patch lead can stop VPN handshakes—and why tidy, well-managed infrastructure matters as much as the software protecting it.