Problem Definition

Documentation to setup Smart mirror - Set up a mirror doesn't have the details about the ports of communication to be opened.

Often run in to issues mentioned in Troubleshooting Smart Mirroring

• Mirror repository takes 10-15 minutes to update
• Mirror won't sync

Suggested Solution

Documentation should also mention the ports of communication(with default ports as an example) between primary and mirror to be opened. May be in Before you start.
With default port as an example:
Mirror host should be able to connect primary on HTTP (443) and SSH(7999) ports. Also, the primary needs to reach the mirror on the HTTPS (443) port .