Fedora 22
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SFTP only + Chroot2015/05/29

Configure SFTP only + Chroot.
Some users who are applied this settings can access only with SFTP and access to the permitted directories.
[1] For example, Set /home as the Chroot directory.
# create a group for SFTP

[root@dlp ~]#
groupadd sftp_users

# for example, apply to a user "fedora" for SFTP only

[root@dlp ~]#
usermod -G sftp_users fedora

[root@dlp ~]#
vi /etc/ssh/sshd_config
# line 146: comment out and add a line like below

Subsystem sftp /usr/libexec/openssh/sftp-server
Subsystem sftp internal-sftp
# add follows to the end

Match Group sftp_users
  X11Forwarding no
  AllowTcpForwarding no
  ChrootDirectory /home
  ForceCommand internal-sftp
[root@dlp ~]#
systemctl restart sshd

[2] Try to access with a user and make sure the settings.
[root@rx-7 ~]#
ssh fedora@

fedora@'s password:
This service allows sftp connections only.
Connection to closed.
# denyed normally
[root@rx-7 ~]#
sftp fedora@

Connecting to
fedora@'s password:
ls -l

drwx------    3 1000     1000         4096 Jul  9 12:06 fedora
drwx------    2 1001     1001           59 Jul  8 22:06 hirokun

Remote working directory: /

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