I don't know about ICS, but CCTV cameras, HVAC controls, parking gates are too often installed by technicians with little to no IT knowledge. They ask the local

I don't know about ICS, but CCTV cameras, HVAC controls, parking gates are too often installed by technicians with little to no IT knowledge. They ask the local IT to open port (ie. port forwarding) for remote management or servicing without knowing the implications. When offered a VPN they often refuse - they do not want or know how to use it.