Device serial numbers
Cloudflare for Teams 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.
Click Create manual list or Upload CSV. For larger teams, it is recommended to upload a CSV or use Cloudflare's API endpoint.
Give your list a descriptive name, as this name will appear when configuring your Access policies.
Set List Type to Serial Number.
Input the serial numbers of the devices your team manages, or upload your CSV file.
Once saved, the serial number list will appear in your list view.
Now you can create or update an existing Access policy to require that any device requesting access belongs to your list of serial numbers.
To do that:
Navigate to Access > Applications.
To add to an existing application, choose the specific resource from the Applications page in the Access section of the sidebar.
Select the Rules tab and edit an existing rule. To add a new rule, click Add a Rule.
Requirerule and choose
Device Posture - Serial Number Listfrom the drop-down menu.
Choose the list of devices to require and click Save rule.
Once saved, any device attempting to reach the application will need to connect from a device that uses Cloudflare WARP and presents a serial number in the list created.