Device serial numbers
Cloudflare Zero Trust allows you to build Zero Trust rules based on device serial numbers. You can create these rules so that access to applications is granted only to users connecting from company devices.
- Cloudflare WARP client is on the device. For a list of supported modes and operating systems, refer to .
Create a list of serial numbers
Give your list a descriptive name, as this name will appear when configuring your policies.
Set List Type to Serial numbers.
Enter the serial numbers of the devices your team manages, or upload your CSV file.
You can now create an or a Gateway that checks if the device presents a serial number on your list. In Access, the serial number check will appear as a Device Posture - Serial Number List selector. In Gateway, your serial number list will appear in the Value dropdown when you choose the selector.
Determine the serial number
Open a terminal window.
system_profilercommand to check for the value of
SPHardwareDataTypeand retrieve the serial number.system_profiler SPHardwareDataType | grep 'Serial Number'
Open a PowerShell window.
Get-CimInstancecommand to get the SerialNumber property of the
Open a Terminal Window
dmidecodecommand to get the version property
system-serial-number.sudo dmidecode -s system-serial-number