Sftp chroot configuration

• Read https://askubuntu.com/a/206376

1) First step

#Subsystem sftp /usr/lib/openssh/sftp-server
Subsystem sftp internal-sftp

2) Second step and create a user section at the end of the file (ssh can die respawning if placed after Subsystem line):

Match User john
   ChrootDirectory %h
   ForceCommand internal-sftp
   AllowTCPForwarding no
   X11Forwarding no

See also: %u (User)

With double Match rule

Match User john LocalPort 2222 
   ChrootDirectory %h
   ForceCommand internal-sftp
   AllowTCPForwarding no
   X11Forwarding no

3) Review privileges from ChrootDirectory directory

Logs

scp error

 protocol error: mtime.sec not present

sshd -T

'Match LocalPort' in configuration but 'lport' not in connection test specification.

See also

• sftp, sftp chroot configuration, Filezilla, Core FTP, sshfs, internal-sftp, sshd_config, SFTP protocol, Secure file transfer program (sftp)
• rsync, scp, sftp, rsnapshot, rclone, rdiff
• sshd, sshd logs, sshd -t, sshd -T, sshd_config, sftp