SFTP setup

sftp

To Create a SFTP server for user to login and access particular folder

Steps 1: Create an additional folder and assign root access alone

	# mkdir -p /data
 
	# chmod 701 /data


Step 2: Create a group for the SFTP user's

	# groupadd group-name

Step 3: Create User and assign Password

	# useradd -g group-name -d /upload -s /sbin/nologin user-name

	# passwd user-name


Step 4: Assign Ownership to directories accordingly

	# mkdir -p /data/user-name/upload

	# chown -R root:group-name /data/user-name

	# chown -R user-name:group-name /data/user-name/upload


Step 5: Edit /etc/ssh/sshd_config and add those line at the bottom. 
(Its Enough editing once and every time adding user it applies to every user)

	# nano /etc/ssh/sshd_config

		Match Group group-name
		ChrootDirectory /data/%u
		ForceCommand internal-sftp


Step 6: Restart the SSH service

	# systemctl restart ssh


Step 7: Testing

	# sftp -i "key-pair" user-name@IPaddress