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Restrict Linux user to WWW folder and disable ssh access

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To be able to restric a Linux user to www folder and disable ssh access, in my example maned user_name, we should proceed some steps:

1) Edit file /etc/ssh/sshd_config and add the next lines


AllowUsers [COLOR="#FF0000"]user_name[/COLOR]

Match User [COLOR="#FF0000"]user_name[/COLOR]
ChrootDirectory /var/www
ForceCommand internal-sftp

2) Edit the file /etc/passwd like in the next example:


[COLOR="#FF0000"]user_name[/COLOR]:1003:1002::/var/www:/bin/false

3) Add user to www-data group using command:


usermod -a -G www-data [COLOR="#FF0000"]user_name[/COLOR]

4) The final step is to restart the ssh service to reload the configuration using one of the next commands:


/etc/init.d/ssh restart

or

service ssh restart

After this steps if we fill try to connect using ssh we will got the next message:


root@kali:/home/razvan1# ssh [COLOR="#FF0000"]user_name[/COLOR]@192.168.1.1
[COLOR="#FF0000"]user_name[/COLOR]@192.168.1.1's password:
This service allows sftp connections only.
Connection to 192.168.1.1 closed.

Author: razvan1@hy

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