diff --git a/nodes/htz-hel/backup-kunsi.py b/nodes/htz-hel/backup-kunsi.py
index 40a921a..1fe796d 100644
--- a/nodes/htz-hel/backup-kunsi.py
+++ b/nodes/htz-hel/backup-kunsi.py
@@ -32,6 +32,16 @@ nodes['htz-hel.backup-kunsi'] = {
             'encrypted-devices': {
                 '/dev/sdb1': bwpass.password('bw/backup-kunsi/encryption-passphrase'),
             },
+            'clients': {
+                'kunsi-t470': {
+                    'user': 'kunsi-t470',
+                },
+            },
+        },
+        'openssh': {
+            'allowed_users': {
+                'kunsi-t470', # backup user
+            },
         },
     },
 }