statefulDefaultActions
The default actions to take on a packet that doesn't match any stateful rules. The stateful default action is optional, and is only valid when using the strict rule order.
Valid values of the stateful default action:
aws:drop_strict
aws:drop_established
aws:alert_strict
aws:alert_established
aws:drop_established_app_layer
aws:alert_established_app_layer
aws:drop_established_app_layer_to_server
aws:alert_established_app_layer_to_server
For more information, see Strict evaluation order in the Network Firewall Developer Guide.