Step 1: Create ssh-keygen file
ssh-keygen
Step 2: Copy file id_rsa to /ftp_home/.ssh/authorized_keys via FTP or someway 🙂
Step 3: Perform ssh to the server using the generated key
ssh -i ~/.ssh/id_rsa ftp_home@192.168.22.107

nhattruong@blog:~$ uname -a
ssh-keygen
ssh -i ~/.ssh/id_rsa ftp_home@192.168.22.107