diff --git a/Migration.md b/Migration.md
index 26afdfd..3c0ccd9 100644
--- a/Migration.md
+++ b/Migration.md
@@ -1,6 +1,6 @@
-## Migration from imbert to zentralwerk
+## Migration from [imbert to zentralwerk](https://codimd.c3d2.de/inbert-2021)
 
-[based on](https://docs.gitea.io/en-us/backup-and-restore/)
+[based on https://docs.gitea.io/en-us/backup-and-restore/](https://docs.gitea.io/en-us/backup-and-restore/)
 
 @imbert:
 ```shell
diff --git a/configuration.nix b/configuration.nix
index b1a135b..2c0ae5e 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -6,6 +6,7 @@
 
   imports = [
      ./modules/nix.nix
+     ./modules/networking.nix
      ./modules/gitea.nix
 
      ./modules/admin.nix
@@ -13,6 +14,5 @@
    ];
  
   system.stateVersion = "21.11";
-  networking.hostName = "gitea";
   time.timeZone = "Europe/Berlin";
 }
diff --git a/modules/gitea.nix b/modules/gitea.nix
index e874ca2..db41916 100644
--- a/modules/gitea.nix
+++ b/modules/gitea.nix
@@ -16,7 +16,7 @@
     };
     repositoryRoot = "/var/lib/gitea/repositories";
 
-    #disableRegistration = true;
+    disableRegistration = true;
 
     lfs.enable = true;
 
diff --git a/modules/networking.nix b/modules/networking.nix
new file mode 100644
index 0000000..36e5ae0
--- /dev/null
+++ b/modules/networking.nix
@@ -0,0 +1,15 @@
+{ config, pkgs, ... }:
+
+{
+  networking = {
+    hostName = "gitea";
+    useDHCP = false;
+    interfaces.eth0 = {
+     useDHCP = false;
+     ipv4.addresses = [{ address = "172.20.73.53"; prefixLength = 26; }];
+    };
+    defaultGateway = "172.20.73.1";
+    nameservers = [ "172.20.73.8" "9.9.9.9" ];
+    firewall.allowedTCPPorts = [ 80 443 2222 ];
+  };
+}