Solution
To prevent remote network connection attempts to VI Server, add the following token to the LabVIEW INI configuration file:
server.tcp.paranoid=True
If this token is set to True, all remote network connection attempts to VI Server are denied, and LabVIEW only accepts VI Server TCP connections from localhost, regardless of the Machine Access list configuration in Tools >> Options >> VI Server. When False, this token configures VI Server to operate normally.