The ASA and ASASM implementations of NetFlow Secure Event Logging (NSEL) provide the following major functions: ... - Delays the export of flow-create events. The ASA and ASASM implementations of NetFlow Secure Event Logging (NSEL) provide the following major functions: ... - Delays the export of flow-create events. Reference: The ASA and ASASM implementations of NetFlow Secure Event Logging (NSEL) provide the following major functions: ... - Delays the export of flow-create events.