diff --git a/configuration.nix b/configuration.nix
index 037d654..f25efc7 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -74,9 +74,25 @@
   # Define a user account. Don't forget to set a password with ‘passwd’.
   users.users.lx = {
     isNormalUser = true;
-    extraGroups = [ "wheel" "video" ]; # Enable ‘sudo’ for the user.
+    extraGroups = [
+      "wheel" # Enable ‘sudo’ for the user.
+      "video" # Having fun with links -g
+    ];
+    openssh.authorizedKeys.keys = [
+      # Keys for accessing nodes from outside
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJpaBZdYxHqMxhv2RExAOa7nkKhPBOHupMP3mYaZ73w9 lx@lindy"
+      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDIDdVbA9fEdqSr5UJ77NnoIqDTVp8ca5kHExhZYI4ecBExFJfonJllXMBN9KdC4ukxtY8Ug47PcMOfMaTBZQc+e+KpvDWpkBt15Xpem3RCxmMBES79sLL7LgtAdBXc5mNaCX8EOEVixWKdarjvxRyf6py6the51G5muaiMpoj5fae4ZpRGjhGTPefzc7y7zRWBUUZ8pYHW774BIaK6XT9gn3hyHV+Occjl/UODXvodktk55YtnuPi8adXTYEsHrVVz8AkFhx+cr0U/U8vtQnsTrZG+JmgQLqpXVs0RDw5bE1RefEbMuYNKxutYKUe3L+ZJtDe0M0MqOFI8a4F5TxP5 katchup@konata"
+      # SSH access between nodes
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINOxa/9nQfPOcUPdpAhiz3s73O/eCB8tevei/VKPyiIV lx@caribou"
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOrlp9pmE4cTirzBAYRfQP5DH2OXzVsKZe7lRO+MXg4Z lx@carcajou"
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIF+2D98laBfRGF90PlOlAo+MKmMnh1kX0Bx6Pzhf4Ym9 lx@cariacou"
+    ];
   };
 
+  users.extraUsers.root.openssh.authorizedKeys.keys = [
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJpaBZdYxHqMxhv2RExAOa7nkKhPBOHupMP3mYaZ73w9 lx@lindy"
+  ];
+
   # List packages installed in system profile. To search, run:
   # $ nix search wget
   environment.systemPackages = with pkgs; [