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Sharing a Teacher’s Mac Screen with a SuperNova Connect & View User

How to enable VNC screen sharing on macOS so a Windows‑based SuperNova user can view an interactive whiteboard in real time.

Overview

A SuperNova Connect & View user can view a teacher’s interactive whiteboard by connecting to the teacher’s Mac through VNC screen sharing. Modern versions of macOS (10.4 Tiger, 2005, and later) include a built‑in VNC server, making the setup straightforward. Older Macs running macOS 10.3 Panther or earlier require third‑party VNC software. This guide explains how to configure the teacher’s Mac, share connection details with the student, and troubleshoot common issues.

 

Enabling Screen Sharing on the Teacher’s Mac

macOS includes a built‑in VNC server that allows remote users to view and control the screen. To enable it:

  1. Open System Preferences and select Sharing under the Internet and Wireless section.

  2. In the Sharing panel, tick the checkbox labelled Screen Sharing.

  3. Select Computer Settings… and enable both:

    • VNC viewers may control screen with password:

    • Anyone may request permission to control screen

  4. Enter a secure password. The SuperNova user will need this to connect.

  5. Back in the Sharing window, note the VNC address displayed (e.g., vnc://192.168.1.11).

  6. Provide the IP address and password to the SuperNova Connect & View user so they can connect from their Windows laptop.

 

Connecting to Older Macs (Pre‑2005)

Macs running macOS 10.3 Panther or earlier do not include built‑in VNC support. In these cases, install a third‑party VNC server such as Vine Server, available from MacUpdate. Vine Server requires a free licence key, included with the Vine Viewer download.

 

Troubleshooting Connection Issues

Some VNC viewers may fail to connect if the Mac’s firewall is running in Stealth Mode. This setting blocks unsolicited network traffic, which can interfere with VNC connections.

To adjust this:

  1. Open System Preferences → Security & Privacy.

  2. Select Advanced….

  3. Toggle Enable stealth mode off temporarily during the lesson.

  4. Re‑enable it afterwards if required.

Both Apple’s built‑in VNC service and third‑party viewers such as RealVNC are compatible with this setup.

This article was last updated 04/03/2026.