If you are connected via SSH or using the console port, you can pull hardware information directly from the BIOS or system management interface.
A cold dread washed over her. The two firewalls had swapped serial numbers. No—not swapped. They were sharing . She pulled up the config history on the production box. The serial number field in the config.xml had been manually edited ten days ago. The log showed the change came from an IP in the management VLAN—a VLAN that, according to the rules, only Mira’s own workstation could access. pfsense serial number