Difference between revisions of "Sftp chroot configuration"

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Line 46: Line 46:
 
  [[chown]]
 
  [[chown]]
 
  [[chmod]] og-rx /home/USERNAME/.ssh
 
  [[chmod]] og-rx /home/USERNAME/.ssh
 +
[[touch]] ~/.ssh/authorized_keys && chmod og-r ~/.ssh/authorized_keys
  
 
  [[mkdir -p]] /path/to/directory/upload
 
  [[mkdir -p]] /path/to/directory/upload

Revision as of 07:37, 9 June 2020

Configuration

/etc/ssh/sshd_config


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

Others:

  • %u (User)
  • %h (home directory)


Multiple users:

 Match User USER1,USER2


With double Match rule

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

3) Review privileges from ChrootDirectory directory


Creating new user

useradd --create-home USERNAME
mkdir -p HOME_USER/.ssh
chown
chmod og-rx /home/USERNAME/.ssh
touch ~/.ssh/authorized_keys && chmod og-r ~/.ssh/authorized_keys
mkdir -p /path/to/directory/upload
chmod 777 /path/to/directory/upload

Logs

scp error

 protocol error: mtime.sec not present

sshd -T

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


Related commands

See also

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