diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index 1cd7cd6..32dcef3 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -3,6 +3,7 @@
     # Include the results of the hardware scan.
     ./hardware-configuration.nix
     ./modules/users/users.nix
+    ./modules/system/networking.nix
   ];
 
   # Bootloader.
@@ -15,11 +16,6 @@
   # Use latest kernel.
   boot.kernelPackages = pkgs.linuxPackages_latest;
 
-  # Networking
-  networking = {
-    hostName = "testVM"; # Define your hostname.
-    networkmanager.enable = true;
-  };
 
   # Set your time zone.
   time.timeZone = "Europe/Berlin";
@@ -71,11 +67,6 @@
   # Enable the OpenSSH daemon.
   services.openssh.enable = true;
 
-  # Open ports in the firewall.
-  # networking.firewall.allowedTCPPorts = [ ... ];
-  # networking.firewall.allowedUDPPorts = [ ... ];
-  # Or disable the firewall altogether.
-  # networking.firewall.enable = false;
 
   system.stateVersion = "25.05"; # Did you read the comment?
 }
diff --git a/nixos/modules/system/networking.nix b/nixos/modules/system/networking.nix
index e69de29..6ed0b0e 100644
--- a/nixos/modules/system/networking.nix
+++ b/nixos/modules/system/networking.nix
@@ -0,0 +1,15 @@
+{
+  config,
+  ...
+}: {
+  networking = {
+    hostName = "nixOS";
+    networkmanager.enable = true;
+  
+    firewall = {
+      enable = true;
+      # allowedTCPPorts = [ 80 443];
+      # allowedUDPPorts = [];
+    };
+  };
+}