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I want to restrict my new created user. Only the /home/user section can be accessed. How can I do that?
I found the answer. For those seeking the same;
Create a new group
sudo addgroup exchangefiles
Create the chroot directory
sudo mkdir /var/www/GroupFolder/
sudo chmod g+rx /var/www/GroupFolder/
Create the group-writable directory
sudo mkdir -p /var/www/GroupFolder/files/
sudo chmod g+rwx /var/www/GroupFolder/files/
Give them both to the new group
sudo chgrp -R exchangefiles /var/www/GroupFolder/
after that i went to /etc/ssh/sshd_config and i added in the end of the file
Match Group exchangefiles
# Force the connection to use SFTP and chroot to the required directory.
# Disable tunneling, authentication agent, TCP and X11 forwarding.
Now I'm going to add new user with obama name to my group
sudo adduser --ingroup exchangefiles obama
now every thing is completly finish we need one commend to restart the ssh again
sudo service ssh restart
notice: the user now can't do any thing out file directory I mean all his file must be in file Folder
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Use permission 700 and make sure the folder owner is correct.
This is not the answer to the problem. example user will only be able to read the /home/example folder. Must not access the /