If a Firewall in enabled, and the KDS is running on more than one computer, it's necessary to create Inbound rules for specific TCP/IP ports in the Firewall so the KDS components can communicate.
For example if the Display Stations are running on different computers than the Kitchen Service. The port numbers are set in the Kitchen service configuration.
The Kitchen Service usually listens on port no. 17750 and the Display Stations use the ports in the range 17800 - 17899 by default. Usually the port-range 17800 - 17850 should be enough.
| Kitchen Service Port | Create an Inbound rule for port 17750 on the server running the Kitchen Service |
| Display Station Listen Port | Create an Inbound rule for port range 17800 - 17850 on all computers running the Display Stations. |