diff --git a/resources/chaosknoten/keycloak/nginx/id.hamburg.ccc.de.conf b/resources/chaosknoten/keycloak/nginx/id.hamburg.ccc.de.conf
index 82ba082d..f158e623 100644
--- a/resources/chaosknoten/keycloak/nginx/id.hamburg.ccc.de.conf
+++ b/resources/chaosknoten/keycloak/nginx/id.hamburg.ccc.de.conf
@@ -46,6 +46,29 @@ server {
     # Also provide "_hidden" for by, since it's not relevant.
     proxy_set_header Forwarded "for=$remote_addr;proto=https;host=$host;by=_hidden";
 
+    # temporary until we can upgrade keycloak stb 2026-08-25
+    allow 185.161.129.134/32; # z9
+    allow 2a07:c480:0:100::/56; # z9
+    allow 2a07:c481:1::/48; # z9 new ipv6
+    allow 213.240.180.39/32; # stb home
+    allow 2a01:170:118b:f701::1/64; # stb home
+
+    # Wieske
+    allow 212.12.48.0/24;
+    allow 2a00:14b0:4200:3000::/64;
+    allow 172.31.18.0/24;
+    allow 172.31.17.0/25;
+    allow 172.31.17.128/25;
+    allow 212.12.51.128/28;
+    allow 2a00:14b0:4200:3500::130:0/112;
+    allow 2a00:14b0:f000:23::/64;
+    allow 10.32.2.0/24;
+    allow 2a00:14b0:42:102::/64;
+    allow 212.12.50.208/29;
+    allow 2a00:14b0:42:105::/64;
+
+    deny all;
+
     # Redirect a user opening any not set location on id.hamburg.ccc.de to the account management page.
     location ^~ / {
         return 307 https://id.hamburg.ccc.de/realms/ccchh/account/;