proftpd无法实现目录锁定

jeace

<Anonymous /www/kehu1>
User kehu1
Group kehu
<Directory /www/kehu1>
AllowOverwrite  on
</Directory>
<Limit LOGIN>
AllowAll
</Limit>
</Anonymous>

我想让kehu1 锁定在自己的目录kehu1下
但是每次登陆进去kehu1仍然可以进入上级目录，/www下

我的
# To cause every FTP user to be "jailed" (chrooted) into their home
# directory, uncomment this line.
DefaultRoot ~
已经打开
谢谢高手们帮帮忙