Pfsense Serial Number < Desktop >
The physical, unique identifier of the hardware unit.
Both the serial number and NDI are displayed in the widget.
cat /etc/uniqueid
Are you trying to , request a recovery image , or open a support ticket ?
Another command-line trick reveals the internal Unique ID, which behaves like a serial for software instances: pfsense serial number
For official , the serial number is a unique physical identifier used to track warranties and support eligibility.
In this comprehensive guide, we will dissect everything you need to know about the pfSense serial number—how to find it via the GUI, the console, and SSH, what to do if it shows "N/A," and why OEM (Netgate) serials differ from generic hardware serials.
Many users use a specific Python script found on GitHub (search "Chelsio T540 serial flash") that automates the calculation of checksums and writes the new MAC/Serial to the correct offset in the EEPROM.
Connect to your pfSense device via or a USB console cable . Log in as admin or root . In the pfSense text menu, select Option 8) Shell . The physical, unique identifier of the hardware unit
If you are currently troubleshooting a hardware issue or need to back up your system deployment details, write down both your and your Netgate Device ID and store them in a secure password manager or network documentation sheet. To help you resolve any specific issues, let me know:
Navigate to the (usually the default landing page). Look at the System Information widget. Locate the row labeled Netgate Device ID or Serial Number .
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A pfSense serial number is more than a sticker. It’s the device’s identity token—linking hardware, cloud backup, support contracts, and firmware integrity into one unbroken chain. Without it, pfSense is just software. With it, it’s a supported, recoverable, enterprise-ready appliance. Another command-line trick reveals the internal Unique ID,
If you are in the shell (via SSH or direct monitor/keyboard), use the following command to query the hardware directly:
Locating your pfSense serial number is a straightforward process. Here are the steps:
In recent versions, such as , the serial number (or Netgate ID) is essential for software lifecycle management.
The fastest and most common way to find your serial number is through the pfSense web dashboard. This method works remotely without requiring physical access to the device or command-line skills. Step-by-Step Instructions: