The syntax of this command is: flow-export destination interface-name ipv4-address | hostname udp-port This command is used on Cisco ASA to configure Network Secure Event Logging (NSEL) collector to which NetFlow packets are sent. The destination keyword indicates that a NSEL collector is being configured. + The interface-name argument is the name of the ASA and ASA Services Module interface through which the collector is reached. + The ipv4-address argument is the IP address of the machine running the collector application. + The hostname argument is the destination IP address or name of the collector. + The udp-port argument is the UDP port number to which NetFlow packets are sent. You can configure a maximum of five collectors. After a collector is configured, template records are automatically sent to all configured NSEL collectors. Reference: https://www.cisco.com/c/en/us/td/docs/security/asa/asa84/configuration/guide/asa_84_cli_config /monitor_nsel.html