How to Setup sFTP Server on Ubuntu 20.04?

Step 1:- Install SSH Server

  sudo apt-get install ssh-server -y

Step 2:-Configure FTP on sshd_config

  /etc/ssh/sshd_config

Step 3:- Edit sshd_config file by using the following command

sudo vi /etc/ssh/sshd_config

Step 4:- Comment the following in the file

#Subsystem sftp /usr/lib/openssh/sftp-server
and append the following to file
· Subsystem sftp internal-sftp
· Match group ftpaccess
· ChrootDirectory %h
· X11Forwarding no
· AllowTcpForwarding no
· ForceCommand internal-sftp

Step 5:- Restart ssh service

sudo systemctl restart ssh

Step 6:- Create SFTP user account & add group using following command:

sudo addgroup sftp

sudo useradd -m sftpUser -g sftp

Step 7:- Set password

 sudo passwd sftpUser
 New password:
 Retype new password:
 passwd: password updated successfully

Step 8:- Finally,Change permission for other user on system deny access

  sudo chmod 700 /home/sftpUser # /home/<username>

Step 9:- Test login via SFTP

 sftp sftpUser@<ip or hostname>

Step 10:- If we get connection closed error need to change sshd_config file

vi /etc/ssh/sshd_config
PasswordAuthentication no
# to
PasswordAuthentication yes

Step 11:- Restart ssh service

sudo systemctl restart ssh

Step 12:- If it is connected we can test connect via filezilla