diff --git a/nixos/configs/robi/hetzner.nix b/nixos/configs/robi/hetzner.nix
index a57c447..72a45c0 100644
--- a/nixos/configs/robi/hetzner.nix
+++ b/nixos/configs/robi/hetzner.nix
@@ -90,6 +90,8 @@ in
   services.openssh.permitRootLogin = "prohibit-password";
   services.openssh.passwordAuthentication = false;
 
+  environment.systemPackages = [ pkgs.mosh ];
+
   users.users.root.openssh.authorizedKeys.keys = [
     "ssh-rsa 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"
   ];
diff --git a/nixos/configs/robi/tinc.nix b/nixos/configs/robi/tinc.nix
index 141df53..2f88b40 100644
--- a/nixos/configs/robi/tinc.nix
+++ b/nixos/configs/robi/tinc.nix
@@ -8,9 +8,17 @@
       openPort = true;
       connectTo = [ ];
     };
+    "secret" = {
+      enable = true;
+      openPort = true;
+      connectTo = [ ];
+    };
   };
 
   #sops.secrets.tinc_retiolum_ed25519_key = { };
   #sops.secrets.tinc_retiolum_rsa_key = { };
 
+  users.users."tinc.secret".group = "tinc.secret";
+  users.groups."tinc.secret" = { };
+
 }
diff --git a/nixos/configs/sternchen/configuration.nix b/nixos/configs/sternchen/configuration.nix
index f23fc1f..1ed87c3 100644
--- a/nixos/configs/sternchen/configuration.nix
+++ b/nixos/configs/sternchen/configuration.nix
@@ -22,8 +22,18 @@
   system.custom.wifi.interfaces = [ "wlp3s0" ];
 
   security.wrappers = {
-    pmount.source = "${pkgs.pmount}/bin/pmount";
-    pumount.source = "${pkgs.pmount}/bin/pumount";
+    pmount = {
+      source = "${pkgs.pmount}/bin/pmount";
+      setuid = true;
+      owner = "root";
+      group = "root";
+    };
+    pumount = {
+      source = "${pkgs.pmount}/bin/pumount";
+      setuid = true;
+      owner = "root";
+      group = "root";
+    };
   };
 
   programs.custom.steam.enable = false;
@@ -60,7 +70,7 @@
     vaapiIntel = pkgs.vaapiIntel.override { enableHybridCodec = true; };
   };
 
-  services.xserver.displayManager.defaultSession = "plasma5";
+  services.xserver.displayManager.defaultSession = "plasma";
 
   services.xserver.desktopManager.pantheon.enable = false;
   services.xserver.desktopManager.xfce.enable = false;
diff --git a/nixos/configs/sternchen/packages.nix b/nixos/configs/sternchen/packages.nix
index 5695d97..7a0010e 100644
--- a/nixos/configs/sternchen/packages.nix
+++ b/nixos/configs/sternchen/packages.nix
@@ -22,6 +22,8 @@
     gnome3.gnome-control-center
     pdfarranger
 
+    ganttproject-bin
+
     # graphic
     #krita
     gthumb
diff --git a/nixos/configs/sternchen/tinc.nix b/nixos/configs/sternchen/tinc.nix
index d006f26..fd45db0 100644
--- a/nixos/configs/sternchen/tinc.nix
+++ b/nixos/configs/sternchen/tinc.nix
@@ -5,20 +5,14 @@ with lib;
 {
 
   module.cluster.services.tinc = {
-    #"private" = {
-    #  enable = true;
-    #  openPort = true;
-    #  connectTo = [ "sputnik" ];
-    #};
-    #"retiolum" = {
-    #  enable = true;
-    #  openPort = true;
-    #};
     "secret" = {
       enable = true;
       openPort = true;
-      connectTo = [ "sputnik" ];
+      connectTo = [ "sputnik" "robi" ];
     };
   };
 
+  users.users."tinc.secret".group = "tinc.secret";
+  users.groups."tinc.secret" = { };
+
 }
diff --git a/nixos/configs/sterni/packages.nix b/nixos/configs/sterni/packages.nix
index 3293923..cd272b3 100644
--- a/nixos/configs/sterni/packages.nix
+++ b/nixos/configs/sterni/packages.nix
@@ -17,6 +17,8 @@ in
 
   environment.systemPackages = with pkgs; [
 
+    ganttproject-bin
+
     (nextcloudSync "InstantUpload")
     (nextcloudSync "Pictures")
     (nextcloudSync "Unterlagen")
diff --git a/nixos/configs/sterni/tinc.nix b/nixos/configs/sterni/tinc.nix
index 9c97b1d..6e78491 100644
--- a/nixos/configs/sterni/tinc.nix
+++ b/nixos/configs/sterni/tinc.nix
@@ -17,7 +17,7 @@ with lib;
     "secret" = {
       enable = true;
       openPort = true;
-      connectTo = [ "sputnik" ];
+      connectTo = [ "sputnik" "robi" ];
     };
   };
 
diff --git a/nixos/system/all/tinc.nix b/nixos/system/all/tinc.nix
index 057922b..117a2c2 100644
--- a/nixos/system/all/tinc.nix
+++ b/nixos/system/all/tinc.nix
@@ -16,6 +16,7 @@ in
 
   users.users."tinc.private".group = "tinc.private";
   users.groups."tinc.private" = { };
+  users.users."tinc.private".isSystemUser = lib.mkDefault true;
 
 
   # nix-shell -p tinc_pre --run "tinc --config . generate-keys 4096"
@@ -82,6 +83,11 @@ in
           tincIp = "10.123.42.122";
           publicKey = lib.fileContents ../../assets/tinc/sputnik_host_file;
         };
+        robi = {
+          realAddress = [ "144.76.13.147" ];
+          tincIp = "10.123.42.123";
+          publicKey = lib.fileContents ../../assets/tinc/robi_host_file;
+        };
       };
     };
     # nix-shell -p tinc_pre --run "tinc --config . generate-keys 4096"