I've found several threads about this. It should be relatively simple to do this under Limits and Validation->FTP Directory Restrictions, check the active, chose the domain and simply chose "users home directory" and click save. it says its done and working.
but I can still browser the whole system to the root /.
I do not understand what I am doing wrong. I have a subdomains in that domain with an additional user, but I have tried both the user for this particular domain and the additional user and both can get out of their home DIR and browser whatever they want.
any ideas what I am doing wrong?