Pfsense Serial Number -
The serial number is also printed on the barcode label of the original shipping box. Understanding Netgate Device ID vs. Serial Number
If you cannot access the web interface, you can retrieve the serial number via the SSH console or a direct serial cable connection. Using SSH or Local Console
If you're running , your device has a real, manufacturer-assigned serial number. This is a unique string used to track manufacturing records, identify the unit for support, and, on newer versions of pfSense software, to determine licensing eligibility.
On Desktop/Wall-Mount Appliances (e.g., Netgate 1100, 2100, 4200)
Navigate to the widget on the main dashboard page. Look for the Netgate Device ID or Serial Number field. pfsense serial number
You are running pfSense CE on non-Netgate hardware (e.g., Protectli, Dell Optiplex, Supermicro, or a VM).
For DevOps and large-scale deployments, you can pull the serial number programmatically.
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.
In the world of network firewalls and routing, proper device identification is crucial for support, licensing, and inventory management. For users of pfSense—the popular open-source firewall and router platform—the serial number plays an essential role in differentiating between official Netgate hardware appliances and community or self-built installations. The serial number is also printed on the
If you can access the web interface, you can find the serial number directly on the dashboard. Log in to the pfSense WebGUI. On the , locate the System Information widget.
The is a SHA256-hashed value unique to your pfSense installation. Because hardware serial numbers aren't universal, Netgate created the NDI as a consistent way to identify pfSense systems for support contracts. The NDI is generated from available system information, and Netgate cannot reverse-engineer it to access other data—it knows only that the NDI is associated with a particular support contract.
Several scenarios can cause serial number display issues, most commonly after firmware updates. For example, after performing BIOS or firmware updates on certain Netgate models (SG-8860, SG-4860), some users have reported the dashboard showing symbols or question marks instead of the actual serial number.
How to find product Serial Number and Check Number | Official Support 02-Feb-2026 — Using SSH or Local Console If you're running
A unique software token generated mathematically by pfSense. Tied forever to that specific physical metal chassis.
Navigate to the (click the pfSense logo or go to Status > Dashboard ). Locate the System Information widget. Look for the Netgate Device ID or Serial Number entry.
For IT professionals managing many firewalls, being able to programmatically retrieve this information is crucial for asset management and automation.
cat /etc/pfsense-serial
