nix/nixos/common/modules/networking.nix

{lib, ... }:  {
  # Enable networking with NetworkManager
  networking = {
    networkmanager = { 
      enable = true;
      logLevel = "INFO";
    };
    
    useDHCP = lib.mkDefault true;
    enableIPv6 = true;
    firewall = { 
      enable = true;
      allowedTCPPorts = [  ];
      allowedUDPPorts = [  ];
    };
  };

  # Enable NTP
  services.timesyncd = {
    enable = true;
    servers = [
      "0.nixos.pool.ntp.org"
      "1.nixos.pool.ntp.org"
      "2.nixos.pool.ntp.org"
      "3.nixos.pool.ntp.org"
    ];
  };
}