u-restrict-mode
When a user is considered restricted, there are different ways to restrict
them. Currently these are limited to confining a user to their home directory,
or confining them to a subdirectory of their home directory.
Most sites will want to set u-restrict-mode=homedir.
This is the default and should be left that way even you do not use restricted
users.
If you want, you can have all users restricted to their $HOME/public_html
directory for example. You could do this by:
u-restrict-mode=subdir-of-homedir public_html
Examples:
u-restrict-mode=homedir
u-restrict-mode=subdir-of-homedir public_html
Recommendation: