Prerequisite: Configure the Syslog for Palo Alto Collector firewall. See instructions from Palo Alto.
Note: The instructions are for v10.1.
To integrate Palo Alto Collector firewall, perform the following steps.
At the Barracuda XDR Dashboard, click Administration > Integrations.
The Integrations page is displayed.
Scroll to the Palo Alto Collector firewall card and then click Setup.

The Enable page is displayed.

Select Enabled.
The selected check box is displayed.
Click Save.