ssh root@remote_IP
adduser remote-user
usermod -aG sudo remote-user
logout
ssh remote-user@remote_IP
ssh-keygen -t rsa
ssh-copy-id remote-user@remote_IP
ssh remote-user@remote_IP
sudo nano /etc/ssh/sshd_config
sudo systemctl restart ssh
sudo nano /etc/apt/sources.list
then add the following line at the end of the file:
deb http://download.webmin.com/download/repository sarge contrib
sudo wget -qO- http://www.webmin.com/jcameron-key.asc | sudo apt-key add
sudo apt update
sudo apt install webmin
sudo apt install libsocket6-perl libwww-perl
(For some features to work properly)