Road finisher or feeder vehicle with a firewall

A construction vehicle which is a road finisher or a feeder vehicle for a road finisher, comprising:

• a drive for providing a drive function of the construction vehicle;
• an internal network area of the construction vehicle, the internal network area comprising a computing unit for controlling an operation of the construction vehicle;
• an external network area of the construction vehicle, the external network area being in data communication connection with the internal network area;
• and
• a firewall configured to monitor data communication from the external network area of the construction vehicle to the internal network area of the construction vehicle, wherein the firewall has its own processor and its own operating system.