IGEL OS offers the ability to observe the endpoint device via shadowing through the IGEL Virtual Network Computing (VNC) Viewer in the Universal Management Suite (UMS) or another VNC client (e.g. TightVNC), see Universal Management Suite > UMS Reference Manual > Devices - Managing Devices in the IGEL UMS > Shadowing - Observe IGEL OS Desktop via VNC. The shadowing of IGEL OS 12 devices through the UMS is always via Unified Protocol, i.e. communication is always encrypted. This article shows the settings for configuring the VNC access to your devices.
...
Deny shadowing via external VNC tool
☑ The device can only be shadowed via the UMS. Shadowing of the device by an external VNC viewer is not possible. For details, see Universal Management Suite > UMS Reference Manual > Devices - Managing Devices in the IGEL UMS > Shadowing - Observe IGEL OS Desktop via VNC > External VNC Viewer. (Default)
☐ The device can be shadowed by an external VNC viewer, not only the UMS.
Use password
☑ The remote user is authenticated with a password before shadowing.
...