Linux

Systemd

sudo systemctl stop caddy
sudo systemctl disable caddy

Networking

sudo ss -lntp | grep -E ':80|:443'
sudo netstat -tulnp | grep -E ':(80|443)'

Upgrade packages

sudo apt-get update && sudo apt-get upgrade -y

Install SSH

sudo apt install openssh-server -y
sudo systemctl enable ssh
sudo systemctl start ssh
sudo systemctl status ssh

Enable Root login for SSH

# Set root password
sudo passwd root
sudo -i
nano /etc/ssh/sshd_config

/etc/ssh/sshd_config

#LoginGraceTime 2m
#PermitRootLogin prohibit-password
PermitRootLogin yes
#StrictModes yes
#MaxAuthtries 6
#MaxSessions 10

sudo systemctl restart sshd