Proftpd - sikkerhedshul til parent directory - hjælp

Hej exp's :)

Jeg har et problem med min proftpd-server.

Når logger ind kan min bruger gå op til / i filtræet.
Hvordan "låse" jeg brugerne fast så de kun kan færdes i deres mappe og dertil hørende undermapper?

Her er min proftpd.conf:
# This is a basic ProFTPD configuration file (rename it to
# 'proftpd.conf' for actual use.  It establishes a single server
# and a single anonymous login.  It assumes that you have a user/group
# "nobody" and "ftp" for normal operation and anon.

ServerName                      "Debian"
ServerType                      standalone
DeferWelcome                    off

ShowSymlinks                    on
MultilineRFC2228                on
DefaultServer                  on
ShowSymlinks                    on
AllowOverwrite                  on

TimeoutNoTransfer              600
TimeoutStalled                  600
TimeoutIdle                    1200

DisplayLogin                    welcome.msg
DisplayFirstChdir              .message

# Port 21 is the standard FTP port.
Port                            21

# Umask 022 is a good standard umask to prevent new files and dirs
# (second parm) from being group and world writable.
Umask                          022  022

# To prevent DoS attacks, set the maximum number of child processes
# to 30.  If you need to allow more than 30 concurrent connections
# at once, simply increase this value.  Note that this ONLY works
# in standalone mode, in inetd mode you should use an inetd server
# that allows you to limit maximum number of processes per service
# (such as xinetd)
MaxInstances                    30

# Set the user and group that the server normally runs at.
User                            nobody
Group                          nogroup

# Normally, we want files to be overwriteable.
<Directory /*>
  AllowOverwrite                on
</Directory>

# A basic anonymous configuration, no upload directories.

<Anonymous ~ftp>
  User                          ftp
  Group                        nogroup
  # We want clients to be able to login with "anonymous" as well as "ftp"
  UserAlias                    anonymous ftp

  RequireValidShell            off

  # Limit the maximum number of anonymous logins
  MaxClients                    10

  # We want 'welcome.msg' displayed at login, and '.message' displayed

  DisplayLogin                  welcome.msg
  DisplayFirstChdir            .message

  # Limit WRITE everywhere in the anonymous chroot
  <Directory *>
    <Limit WRITE>
      DenyAll
    </Limit>
  </Directory>

  # Uncomment this if you're brave.
  <Directory incoming>
            <Limit READ WRITE>
            DenyAll
            </Limit>
            <Limit STOR>
            AllowAll
            </Limit>
  </Directory>

</Anonymous>


#SQL
        SQLConnectInfo        *******@localhost ***** *****
        SQLAuthenticate      users groups
        SQLAuthTypes          Crypt Backend
        SQLUserInfo          users userid passwd uid gid homedir shell
        SQLGroupInfo          groups groupid gid members
        SQLLogFile      /var/log/proftpd.sql


BEMÆRK: Jeg bruger MySQL.

//TheMaster