1 files changed, 37 insertions, 0 deletions
diff --git a/modules/fail2ban.nix b/modules/fail2ban.nix
new file mode 100644
index 0000000..a0cc2b4
--- /dev/null
+++ b/modules/fail2ban.nix
@@ -0,0 +1,37 @@
+{
+  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.settings.blocktype = "DROP";
+    };
+  };
+}