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 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:
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

Reference: https://docs.umbrella.com/deployment-umbrella/docs/working-with-destination-lists

There are two possible methods to accomplish the redirection of traffic to Cisco WSA: transparent proxy mode and explicit proxy mode.
In a transparent proxy deployment, a WCCP v2-capable network device redirects all TCP traffic with a destination of port 80 or 443 to Cisco WSA, without any configuration on the client. The transparent proxy deployment is used in this design, and the Cisco ASA firewall is used to redirect traffic to the appliance because all of the outbound web traffic passes through the device and is generally managed by the same operations staff who manage Cisco WSA.
There are two possible methods to accomplish the redirection of traffic to Cisco WSA: transparent proxy mode and explicit proxy mode.
In a transparent proxy deployment, a WCCP v2-capable network device redirects all TCP traffic with a destination of port 80 or 443 to Cisco WSA, without any configuration on the client. The transparent proxy deployment is used in this design, and the Cisco ASA firewall is used to redirect traffic to the appliance because all of the outbound web traffic passes through the device and is generally managed by the same operations staff who manage Cisco WSA.
Reference:
There are two possible methods to accomplish the redirection of traffic to Cisco WSA: transparent proxy mode and explicit proxy mode.
In a transparent proxy deployment, a WCCP v2-capable network device redirects all TCP traffic with a destination of port 80 or 443 to Cisco WSA, without any configuration on the client. The transparent proxy deployment is used in this design, and the Cisco ASA firewall is used to redirect traffic to the appliance because all of the outbound web traffic passes through the device and is generally managed by the same operations staff who manage Cisco WSA.