You can find the serial number for a pfSense device—particularly official Netgate hardware—using several methods through the interface, command line, or physical hardware. 1. pfSense WebGUI (Dashboard) The most direct way is via the browser: System Information Widget : On the main dashboard, look for the System Information For official Netgate hardware, the field will explicitly display your unit's serial number.
For generic "white box" hardware, this field may display the System UUID or "Not Set" if not properly populated in the BIOS. Netgate Forum 2. Command Line (CLI / SSH) pfsense serial number
You need a valid MAC address. You can generate a random one or use a MAC address generator online. Ensure it is unique within your network. You can find the serial number for a
pfSense has two main branches: (free, open-source) and pfSense Plus (a more feature-rich, professionally supported version). For pfSense Plus running on Netgate hardware, the serial number is used to automatically activate the software license. Without a valid, recognized serial number, pfSense Plus may revert to a trial mode or fail to receive updates. For generic "white box" hardware, this field may