AWS DataSync - Control Traffic Details

A customer is working to enable AWS DataSync to be consumed. A question from the Security Architect is what does the control traffic on 1024-1064 include? Is this traffic encrypted ?

I do understand this is a communication requirement between the DataSync Agent EC2/VM and DataSync Service per https://docs.aws.amazon.com/datasync/latest/userguide/datasync-network.html

Thanks