diff --git a/users/b12f/concepts-and-training.nix b/users/b12f/concepts-and-training.nix
index 0d6f0fe..cee5096 100644
--- a/users/b12f/concepts-and-training.nix
+++ b/users/b12f/concepts-and-training.nix
@@ -34,46 +34,55 @@ in {
         "salt.base.test" = {
           hostname = "10.0.0.2";
           user = "root";
+          proxyJump = "gateway.base.test";
         };
 
         "gateway.base.test" = {
-          hostname = "10.0.0.3";
+          # hostname = "10.0.0.3";
+          hostname = "gateway.base.cate-infra-test.de";
           user = "root";
         };
 
         "monitor.base.test" = {
           hostname = "10.0.0.4";
           user = "root";
+          proxyJump = "gateway.base.test";
         };
 
         "proxy1.prod.test" = {
           hostname = "10.0.0.6";
           user = "root";
+          proxyJump = "gateway.base.test";
         };
 
         "proxy2.prod.test" = {
           hostname = "10.0.0.7";
           user = "root";
+          proxyJump = "gateway.base.test";
         };
 
         "demo1.prod.test" = {
           hostname = "10.0.0.5";
           user = "root";
+          proxyJump = "gateway.base.test";
         };
 
         "demo2.prod.test" = {
           hostname = "10.0.0.5";
           user = "root";
+          proxyJump = "gateway.base.test";
         };
 
         "proxy1.test.test" = {
           hostname = "10.0.0.8";
           user = "root";
+          proxyJump = "gateway.base.test";
         };
 
         "proxy2.test.test" = {
           hostname = "10.0.0.9";
           user = "root";
+          proxyJump = "gateway.base.test";
         };
       };
     };