You can bind to the loopback interface so the server isn't exposed to the network. I am not sure if Windows will choose to show the scary dialog in this case. T

You can bind to the loopback interface so the server isn't exposed to the network. I am not sure if Windows will choose to show the scary dialog in this case. To be absolutely sure, according to Stack Overflow you can request admin privileges (standard for Windows installers of course) and add a firewall rule yourself allowing any network communication you want.