modules/nixos/fail2ban.nix


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{
  config,
  lib,
  this,
  ...
}:
with lib; let
  cfg = config.nixfiles.modules.fail2ban;
in {
  options.nixfiles.modules.fail2ban.enable =
    mkEnableOption "fail2ban";

  config = mkIf cfg.enable {
    ark.directories = ["/var/lib/fail2ban"];

    services.fail2ban = {
      enable = true;

      bantime-increment = {
        enable = true;
        maxtime = "24h";
        rndtime = "8m";
      };

      ignoreIP =
        optionals (hasAttr "wireguard" this)
        (with config.nixfiles.modules.wireguard; [ipv4.subnet ipv6.subnet]);

      jails.DEFAULT = ''
        blocktype = DROP
      '';
    };
  };
}