Note that Explo only supports the Clickhouse Native Protocol and other common Clickhouse ports will not work. Ensure the native protocol port over SSL is open. Find out more here.
Explo’s new data connector (FIDO) will be using the HTTPS port, 8443. Please ensure BOTH are allowlisted. If you are onboarding to a new workspace, the Explo team can help you determine which connector you are initially using.