Flow sources
For IBM QRadar appliances, QRadar automatically adds default flow sources for the physical ports on the appliance, and includes a default NetFlow flow source.
If QRadar is installed on your own hardware, QRadar attempts to automatically detect and add default flow sources for any physical devices, such as a network interface card (NIC). When you assign a IBM QRadar Flow Collector, QRadar includes a default NetFlow flow source.