sftp-ubuntu.md

Adding SFTP-only user to Ubuntu Server

To add a SFTP-only user, you'll need to make sure your SSH config settings are correct, add a new user/group and set permissions for your new user. For step-by-step directions, see below. Omit sudo if you're logged in as root.

Directions

1. Edit /etc/ssh/sshd_config and make sure to add the following at the end of the file:

    Match group filetransfer
    	ChrootDirectory %h
        X11Forwarding no
        AllowTcpForwarding no
    	ForceCommand internal-sftp
   

2. Restart OpenSSH:

    sudo /etc/init.d/ssh restart
   

3. Add new group for SFTP-only users:

    sudo addgroup filetransfer
   

4. Add new user (make sure to switch out username in the following steps to your specified username):

    sudo adduser username
   

5. Add user to new group and set permissions:

    sudo usermod -G filetransfer username
    sudo chown root:root /home/username
    sudo chmod 755 /home/username
   

6. Create directories for user and set final permissions:

    cd /home/username
    sudo mkdir folder_1 folder_2
    sudo chown username:username *
   

7. Use Cyberduck or another SFTP client to connect. Go have a beer.

To let users of this group edit the same files that are owned by www-data:

add www-data to filetransfer group
usermod -G filetransfer www-data

cd ./magento
chown www-data:filetransfer ./ -R
(set group read/write permissions)
chmod -R g+rw- ./