How to restrict user access to his home directory?

Question

linux

How to restrict user(debian) access to his home directory like ISP does?

Answer 1

Depending on the required isolation level, rbash, chmod, chroot are used in ascending order.

Answer 2

You may not need to restrict a user to their directory.
But you need to ensure that different users do not have rights to view each other's directories.
This is done simply by rights.

Answer 3

I did this:
I set the rights to all directories, except for the user directory -******---- (where "*" is r, w or x), that is, ** 0 (where "*" is the corresponding number). I copied the necessary programs and libraries to /home/$user/bin and /home/$user/lib, then rewrote the PATH in .bashrc to the appropriate paths in the user directory.
All!

Answer 4

It is necessary to create a new FTP user and specify not the standard folder (entry point) but its domain, for example /site.ru
If I understand your question correctly. And then he will not have access to other sites.