OpenSSH : SFTP only + Chroot2021/08/17 |
Configure SFTP only + Chroot.
Some users who are applied this setting can access only with SFTP and also applied chroot directory. |
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[1] | For example, Set [/home] as the Chroot directory. |
root@dlp:~#
vi /etc/ssh/sshd_config # line 116 : comment out and add a line like below # Subsystem sftp /usr/lib/openssh/sftp-serverSubsystem sftp internal-sftp
# add to the end Match Group sftp_users X11Forwarding no AllowTcpForwarding no ChrootDirectory /home ForceCommand internal-sftp
root@dlp:~#
systemctl restart ssh
# apply to a user [debian] for SFTP only as an example root@dlp:~# usermod -aG sftp_users debian |
[2] | Try to access with a user and verify the settings. |
debian@node01:~$ ssh debian@dlp.srv.world
Enter passphrase for key '/home/debian/.ssh/id_rsa':
This service allows sftp connections only.
Connection to dlp.srv.world closed. # denied as settings
debian@node01:~$ sftp debian@dlp.srv.world Enter passphrase for key '/home/debian/.ssh/id_rsa': Connected to dlp.srv.world. sftp> |
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