Not all Cisco network devices are capable of producing NetFlow or sFlow data. Please refer to your particular device's product documentation to see if your device is capable of producing either NetFlow or sFlow data. If your device does produce NetFlow or sFlow data, using a standardized format, you can capture this data in EventSentry.
Cisco ASA products: The Cisco ASA line of products is supported by EventSentry, but they do not generate NetFlow data in a standardized format, and also do not produce NetFlow data in realtime.