CerHost is a lightweight, proprietary utility from Microsoft that allows you to view and control the desktop of a Windows CE-based device from your host PC over an Ethernet connection.
CeRHost v3.3 fails to connect over Ethernet - Technical Support Cerhost.exe Microsoft
CerHost uses a non-encrypted protocol . It is highly recommended to use it only within a secured, private network. CerHost is a lightweight, proprietary utility from Microsoft