If you are connected via SSH or a console cable, you can pull the serial number directly from the system environment using these commands:
If you are using official Netgate hardware, the Serial Number will be clearly listed here.
There are three primary ways to locate your serial number: through the web-based interface, the command-line interface (CLI), or the physical hardware itself. 1. The WebGUI Dashboard pfsense serial number
For official Netgate appliances (such as the SG-2100 or XG-1541), the serial number is printed on a physical sticker. System serial number | Netgate Forum
The easiest way to find the serial number is through the pfSense WebGUI dashboard . If you are connected via SSH or a
On the main dashboard, look for the System Information widget.
For generic hardware where a serial number isn't populated in the BIOS, pfSense will display a Host UUID instead. 2. Command Line Interface (CLI) The WebGUI Dashboard For official Netgate appliances (such
You can also try running kenv to see various kernel environment variables that often include hardware identifiers.