diff --git a/hive.nix b/hive.nix
index e1ec5da..c38c402 100644
--- a/hive.nix
+++ b/hive.nix
@@ -4,28 +4,29 @@ let
 
   lib = import (sources.nix-lib + "/src/trivial.nix");
 
-  mkNode = node: { name, nodes, ... }: {
-    # Import the base configuration for each node
-    imports = builtins.map (lib.mkRel ./machines/${node}) [
-      "_configuration.nix"
-      "_hardware-configuration.nix"
-    ];
+  mkNode = node:
+    { name, nodes, pkgs, ... }: {
+      # Import the base configuration for each node
+      imports = builtins.map (lib.mkRel ./machines/${node}) [
+        "_configuration.nix"
+        "_hardware-configuration.nix"
+      ];
 
-    # Include default secrets
-    dgn-secrets.sources = [ ./machines/${node}/secrets ];
+      # Include default secrets
+      dgn-secrets.sources = [ ./machines/${node}/secrets ];
 
-    # Deployment config is specified in meta.nodes.${node}.deployment
-    inherit (metadata.nodes.${node}) deployment;
+      # Deployment config is specified in meta.nodes.${node}.deployment
+      inherit (metadata.nodes.${node}) deployment;
 
-    # Set NIX_PATH to the patched version of nixpkgs
-    nix.nixPath = [ "nixpkgs=${mkNixpkgs node}" ];
+      # Set NIX_PATH to the patched version of nixpkgs
+      nix.nixPath = [ "nixpkgs=${mkNixpkgs node}" ];
 
-    # Allow unfree packages
-    nixpkgs.config.allowUnfree = true;
+      # Allow unfree packages
+      nixpkgs.config.allowUnfree = true;
 
-    # Use the stateVersion declared in the metadata
-    system = { inherit (metadata.nodes.${node}) stateVersion; };
-  };
+      # Use the stateVersion declared in the metadata
+      system = { inherit (metadata.nodes.${node}) stateVersion; };
+    };
 
   mkNixpkgs = node:
     let
@@ -42,23 +43,36 @@ let
 
   mkNixpkgs' = node: import (mkNixpkgs node) { };
 
-  mkArgs = node: {
-    dgn-lib = import sources.nix-lib { inherit ((mkNixpkgs' node)) lib; keysRoot = ./keys; metaRoot = ./meta; };
-  };
+  ###
+  # Function to create arguments based on the node
+  #
+  mkArgs = node:
+    let lib' = (mkNixpkgs' node).lib;
+    in {
+      lib = lib' // {
+        extra = import sources.nix-lib {
+          lib = lib';
+          keysRoot = ./keys;
+          metaRoot = ./meta;
+        };
+      };
+    };
 
   nodes = builtins.attrNames metadata.nodes;
-in
 
-{
+in {
   meta = {
     nodeNixpkgs = lib.mapSingleFuse mkNixpkgs' nodes;
 
-    specialArgs = { inherit sources; meta = metadata; };
+    specialArgs = {
+      inherit sources;
+      meta = metadata;
+    };
 
     nodeSpecialArgs = lib.mapSingleFuse mkArgs nodes;
   };
 
-  defaults = { ... }: {
+  defaults = { pkgs, ... }: {
     # Import the default modules
     imports = [ ./modules ];
   };
diff --git a/machines/compute01/_configuration.nix b/machines/compute01/_configuration.nix
index af765f6..47c6e00 100644
--- a/machines/compute01/_configuration.nix
+++ b/machines/compute01/_configuration.nix
@@ -1,6 +1,6 @@
-{ dgn-lib, ... }:
+{ lib, ... }:
 
-dgn-lib.mkConfig {
+lib.extra.mkConfig {
   enabledModules = [
     # List of modules to enable
     "dgn-dns"
diff --git a/machines/storage01/_configuration.nix b/machines/storage01/_configuration.nix
index d9bb98f..5f216d3 100644
--- a/machines/storage01/_configuration.nix
+++ b/machines/storage01/_configuration.nix
@@ -1,6 +1,6 @@
-{ dgn-lib, ... }:
+{ lib, ... }:
 
-dgn-lib.mkConfig {
+lib.extra.mkConfig {
   enabledModules = [
     # List of modules to enable
     "dgn-web"
diff --git a/machines/web01/_configuration.nix b/machines/web01/_configuration.nix
index dae67b3..d592051 100644
--- a/machines/web01/_configuration.nix
+++ b/machines/web01/_configuration.nix
@@ -1,6 +1,6 @@
-{ dgn-lib, ... }:
+{ lib, ... }:
 
-dgn-lib.mkConfig {
+lib.extra.mkConfig {
   enabledModules = [
     # List of modules to enable
     "dgn-web"
diff --git a/modules/default.nix b/modules/default.nix
index 17be621..e3032aa 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -31,10 +31,10 @@
 #  pris connaissance de la licence CeCILL, et que vous en avez accepté les
 #  termes.
 
-{ dgn-lib, sources, ... }:
+{ lib, sources, ... }:
 
 {
-  imports = (dgn-lib.mkImports ./. [
+  imports = (lib.extra.mkImports ./. [
     "dgn-access-control"
     "dgn-acme"
     "dgn-console"
diff --git a/modules/dgn-access-control.nix b/modules/dgn-access-control.nix
index b073a09..58394a9 100644
--- a/modules/dgn-access-control.nix
+++ b/modules/dgn-access-control.nix
@@ -31,7 +31,7 @@
 #  pris connaissance de la licence CeCILL, et que vous en avez accepté les
 #  termes.
 
-{ config, lib, dgn-lib, meta, name, ... }:
+{ config, lib, meta, name, ... }:
 
 let
   inherit (lib)
@@ -73,7 +73,7 @@ in
     dgn-access-control.users.root = mkDefault admins;
 
     users.users = builtins.mapAttrs
-      (u: members: { openssh.authorizedKeys.keys = dgn-lib.getAllKeys members; })
+      (u: members: { openssh.authorizedKeys.keys = lib.extra.getAllKeys members; })
       cfg.users;
   };
 }
diff --git a/modules/dgn-dns/zones/_dgnum.eu.nix b/modules/dgn-dns/zones/_dgnum.eu.nix
index fde6788..7e331de 100644
--- a/modules/dgn-dns/zones/_dgnum.eu.nix
+++ b/modules/dgn-dns/zones/_dgnum.eu.nix
@@ -1,7 +1,7 @@
-{ dgn-lib, meta, dns, ... }:
+{ lib, meta, dns, ... }:
 
 let
-  inherit (dgn-lib)
+  inherit (lib.extra)
     fuseAttrs
     mapSingleFuse;
 
diff --git a/modules/dgn-dns/zones/default.nix b/modules/dgn-dns/zones/default.nix
index 972f918..e835896 100644
--- a/modules/dgn-dns/zones/default.nix
+++ b/modules/dgn-dns/zones/default.nix
@@ -1,7 +1,7 @@
-args@{ dgn-lib, dns, ... }:
+args@{ lib, dns, ... }:
 
 let
-  inherit (dgn-lib)
+  inherit (lib.extra)
     mapSingleFuse
     mkRel
     recursiveFuse;
diff --git a/modules/dgn-fail2ban.nix b/modules/dgn-fail2ban.nix
new file mode 100644
index 0000000..35131ab
--- /dev/null
+++ b/modules/dgn-fail2ban.nix
@@ -0,0 +1,81 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib)
+    mkDefault mkEnableOption mkIf mkOption
+
+    types;
+
+  cfg = config.dgn-fail2ban;
+
+  settingsFormat = pkgs.formats.keyValue { };
+
+  configFormat = pkgs.formats.ini { };
+
+  jailOptions = {
+    options = {
+      enabled = mkOption {
+        type = types.bool;
+
+        default = true;
+        description = "Wether to enable this jail.";
+      };
+
+      filter = mkOption {
+        type =
+          types.nullOr (types.submodule { freeformType = configFormat.type; });
+
+        description = "Content of the filter used for this jail.";
+      };
+
+      settings = mkOption {
+        type = types.submodule { freeformType = settingsFormat.type; };
+
+        default = { };
+        description = "Additional configuration for the jail.";
+      };
+    };
+  };
+
+in {
+  options.dgn-fail2ban = {
+    enable = mkEnableOption "fail2ban service.";
+
+    jails = mkOption {
+      type = types.attrsOf (types.submodule jailOptions);
+
+      default = { };
+      description = "Set of jails defined for fail2ban.";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    dgn-fail2ban.jails = builtins.mapAttrs (_: j: j // { enabled = mkDefault false; })
+      (import ./jails.nix { });
+
+    services.fail2ban = {
+      enable = true;
+
+      inherit (cfg) jails;
+
+      ignoreIP = [
+        "10.0.0.0/8"
+        "125.199.0.0/16"
+        "172.16.0.0/12"
+        "192.168.0.0/16"
+        "100.64.0.0/10"
+        "fd00::/8"
+      ];
+
+      bantime-increment = {
+        enable = true;
+
+        maxtime = "48h";
+        factor = "600";
+      };
+
+      extraPackages = [ pkgs.ipset ];
+      banaction = "iptables-ipset-proto6-allports";
+    };
+  };
+}
diff --git a/modules/dgn-secrets.nix b/modules/dgn-secrets.nix
index 444be9d..98feed7 100644
--- a/modules/dgn-secrets.nix
+++ b/modules/dgn-secrets.nix
@@ -31,7 +31,7 @@
 #  pris connaissance de la licence CeCILL, et que vous en avez accepté les
 #  termes.
 
-{ config, lib, dgn-lib, ... }:
+{ config, lib, ... }:
 
 let
   inherit (lib)
@@ -39,7 +39,7 @@ let
 
     types;
 
-  inherit (dgn-lib) getSecrets mkBaseSecrets recursiveFuse;
+  inherit (lib.extra) getSecrets mkBaseSecrets recursiveFuse;
 
   cfg = config.dgn-secrets;
 
@@ -92,7 +92,7 @@ in {
 
     names = mkOption {
       type = with types; listOf str;
-      default = builtins.foldl' (acc: dir: acc ++ (dgn-lib.getSecrets dir)) [ ]
+      default = builtins.foldl' (acc: dir: acc ++ (getSecrets dir)) [ ]
         cfg.sources;
       description = ''
         List of the names of the secrets.