{ ... }: {
  imports = [
    ./utils/bento.nix
    ./utils/modules/sops.nix
    ./utils/modules/lego/lego.nix

    ./utils/modules/nginx.nix

    ./utils/modules/autoupgrade.nix
    ./utils/modules/promtail
    ./utils/modules/borgbackup.nix
    ./utils/modules/netdata.nix

    ./modules/networking.nix
    ./modules/firewall.nix
    ./modules/dhcp4.nix
    ./modules/avahi.nix
    ./modules/openconnect.nix

    ./hardware-configuration.nix
  ];

  nixpkgs.config.permittedInsecurePackages = [
  ];

  time.timeZone = "Europe/Vienna";

  services.logind.extraConfig = "RuntimeDirectorySize=2G";

  sops.age.sshKeyPaths = [ "/etc/ssh/ssh_host_ed25519_key" ];
  sops.defaultSopsFile = ./secrets.yaml;
  
  environment.systemPackages = with pkgs; [
    vim                 # my preferred editor
    htop                # to see the system load
    ppp                 # for some manual debugging of pppd
    ethtool             # manage NIC settings (offload, NIC feeatures, ...)
    tcpdump             # view network traffic
    conntrack-tools     # view network connection states
  ];

  nix.gc = {
    automatic = true;
    options = "--delete-older-than 60d";
  };

  boot.tmp.cleanOnBoot = true;
  zramSwap.enable = true;
  networking.hostName = "fw";
  services.openssh.enable = true;
  users.users.root.openssh.authorizedKeys.keys = [
    "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDN/2SAFm50kraB1fepAizox/QRXxB7WbqVbH+5OPalDT47VIJGNKOKhixQoqhABHxEoLxdf/C83wxlCVlPV9poLfDgVkA3Lyt5r3tSFQ6QjjOJAgchWamMsxxyGBedhKvhiEzcr/Lxytnoz3kjDG8fqQJwEpdqMmJoMUfyL2Rqp16u+FQ7d5aJtwO8EUqovhMaNO7rggjPpV/uMOg+tBxxmscliN7DLuP4EMTA/FwXVzcFNbOx3K9BdpMRAaSJt4SWcJO2cS2KHA5n/H+PQI7nz5KN3Yr/upJN5fROhi/SHvK39QOx12Pv7FCuWlc+oR68vLaoCKYhnkl3DnCfc7A7"
    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIRQuPqH5fdX3KEw7DXzWEdO3AlUn1oSmtJtHB71ICoH Generated By Termius"
  ];

  # backups
  borgbackup.repo = "u149513-sub5@u149513-sub5.your-backup.de:borg";

  system.stateVersion = "22.05";
}