move modules to seperate folder

flake.nix

@@ -25,11 +25,12 @@
         inherit system;
         modules = [
           ./configuration.nix
-          ./matrix.nix
+          ./modules/matrix.nix
-          ./puffer.nix
+          ./modules/puffer.nix
-          ./gitea.nix
+          ./modules/gitea.nix
-          ./letsencrypt.nix
+          ./modules/letsencrypt.nix
-          ./email.nix
+          ./modules/fail2ban.nix
+          ./modules/email.nix
           agenix.nixosModules.default
           nixos-mailserver.nixosModules.default
           nixos-matrix-modules.nixosModules.default

modules/fail2ban.nix

@@ -0,0 +1,19 @@
+{ ... }: {
+  services.fail2ban = {
+    enable = true;
+    maxretry = 5;
+    ignoreIP = [
+      # Whitelist some subnets
+      "10.0.0.0/8" "172.16.0.0/12" "192.168.0.0/16"
+      "matrix.org"
+      "app.element.io" # don't ratelimit matrix users
+    ];
+    bantime = "1h"; # Ban IPs for 1h at first.
+    bantime-increment = {
+      enable = true; # Enable increment of bantime after each violation
+      multipliers = "1 2 4 8 16 32 64 128 256";
+      maxtime = "168h"; # Do not ban for more than 1 week
+      overalljails = true; # Calculate the bantime based on all the violations
+    };
+  };
+}

modules/matrix.nix

@@ -86,12 +86,12 @@ host    replication     all             ::1/128                 md5
   services.redis.servers."".enable = true;
 
   age.secrets.synapse_db_pass = {
-    file = ./secrets/synapse_db_pass.age;
+    file = ../secrets/synapse_db_pass.age;
     owner = "postgres";
     group = "postgres";
   };
   age.secrets.synapse_db_pass_prepared = {
-    file = ./secrets/synapse_db_pass_prepared.age;
+    file = ../secrets/synapse_db_pass_prepared.age;
     owner = "matrix-synapse";
     group = "matrix-synapse";
     mode = "0600";