Internet-Security.com TCP port 4010 details

Moxa NPort serial device servers (e.g., NPort 5650/5610/5450 series) use TCP 4001–4016 by default for raw socket access to their serial ports; TCP 4010 is the default listener for serial port 10.
Advantech EKI serial device servers (e.g., EKI‑1522/1524) follow the same convention, with TCP 4001 mapping to port 1; TCP 4010 maps to the device’s serial port 10.
Korenix JetPort multiport serial device servers also default to sequential TCP ports per serial port, commonly including 4010 for the 10th port, in raw TCP server mode.

TCP 4010