Add the following to the end of the /etc/ssh/sshd_config file:
-
Subsystem sftp internal-sftp # This section must be placed at the very end of sshd_config Match Group sftponly ChrootDirectory %h ForceCommand internal-sftp AllowTcpForwarding no
This means that all users in the ‘sftponly’ group will be chroot’d to their home directory, where they only will be able to run internal SFTP processes.
Now you can create the group sftponly by running the following command: