Here, you manage device definitions which define how HTTP headers in requests are interpreted to identify devices. Access Points can detect a device based on its HTTP headers.
When creating access rules of the type Client Device, device definitions are used to protect a resource.
When creating Client Firewall rules based on the path or checksum of the process that is trying to connect to the Internet, Device Definitions specify the values of the path, and/or checksum of the process. There are two variables that can be used in Device Definitions that is used by Client Firewall.
These are:
clientfirewall-path
clientfirewall-checksum
Only Device Definitions containing these variables can be used in the Client Firewall Rules.
You can also set up global device restrictions which is done in the Manage Global Access Point Settings section on the Client Access tab.