ProtectON 4.2.704 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus. This software is an intellectual property of MasterSolution AG. ProtectON lies within System Utilities, more precisely Remote Computing.
From the developer:
Keep networked computers free from damage and running reliably with Netop ProtectOn Pro, the affordable new endpoint protection software that combines robust hard disk protection with powerful remote management and comprehensive Internet, application and device controls. Protect data and system integrity by controlling user access to USB devices, hard disks, floppy drives, Web sites, applications and more.
You may want to check out more software, such as pcAnywhere, Beyond Remote Host or CafePilot Client, which might be similar to ProtectON.