to a specific instance of pfSense, preventing "spoofing" on generic hardware. Sensitive Information & Security System serial number | Netgate Forum
You must flash a new serial number into the card's EEPROM. pfsense serial number
On Netgate hardware, a small silver sticker on the underside of the device (or near the power port) lists: to a specific instance of pfSense, preventing "spoofing"
cat /etc/pfsense-serial
The sticker usually says followed by a alphanumeric string starting with the model name. to a specific instance of pfSense
The serial number is not arbitrary. Its format often reflects: