{
  networking = {
    nftables = {
      enable = false;
    };
    firewall = {
      enable = true;
      allowedTCPPorts = [ 4713 ];
      #allowedUDPPorts = [ 80 443 ];
      allowedTCPPortRanges = [
        { from = 8000; to = 9000; }
      ];
      allowedUDPPortRanges = [
        { from = 8000; to = 9000; }
      ];
    };
  };
}