Thank you guys. Sip works now like a charm. Concerning the password, I remember that I heared something, but you are right, it was in connection with ssh. That makes sense.

Kwotski, here is the output, you asked me for:

drwxrwxrwx 2 user root 65536 Dec 6 21:26 .
-rw-r--r-- 1 user root 0 Dec 6 21:26 text.txt
drwxrwxrwx 13 user root 65536 Dec 6 20:08 ..
-rw-r--r-- 1 user root 522421 Oct 8 12:57 ._Documents
-rw-r--r-- 1 user root 522404 Oct 8 12:57 ._Images
-rw-r--r-- 1 user root 522404 Oct 8 12:57 ._Sounds
-rw-r--r-- 1 user root 522404 Oct 8 12:57 ._Videos
-rw-r--r-- 1 user root 0 Oct 8 12:57 Documents
-rw-r--r-- 1 user root 0 Oct 8 12:57 Images
-rw-r--r-- 1 user root 0 Oct 8 12:57 Sounds
-rw-r--r-- 1 user root 0 Oct 8 12:57 Videos