diff --git a/config/default.nix b/config/default.nix
index ee0431b6..58b50cbd 100644
--- a/config/default.nix
+++ b/config/default.nix
@@ -179,8 +179,8 @@
 
     portunus = with zentralwerk.lib.config.site.net.serv; {
       domain = "auth.c3d2.de";
-      externalIp4 = hosts4.auth;
-      externalIp6 = hosts6.up4.auth;
+      internalIp4 = hosts4.auth;
+      internalIp6 = hosts6.up4.auth;
       ldapPreset = true;
     };