{ ... }:
{
  # https://help.ui.com/hc/en-us/articles/218506997-Required-Ports-Reference
  networking.firewall.allowedTCPPorts = [ 8080 8000 8443 8880 8843 6789 27117 ];
  networking.firewall.allowedUDPPorts = [ 3478 5514 10001 1900 123 ];
  networking.firewall.allowedUDPPortRanges = [ { from = 5656; to = 5699; } ];
}