Is there any encryption used by Enterprise Reporter (4225495)

When looking at the port requirements for the various Discoveries, do any of these ports use encryption?

Would the scanning credentials (Discovery credentials) be passed in clear text when the Discovery makes the initial connection to the target?

When a connection is established, is the data that is gathered by the Node encrypted or use an encrypted tunnel to send the data from the target back to the node and then to the Enterprise Reporter database?