sudo systemctl status sshd
sudo systemctl start sshd
sudo systemctl enable sshd
sudo ss -tlnp | grep sshd
sudo firewall-cmd --permanent --add-service=ssh
sudo firewall-cmd --reload
sudo grep "PasswordAuthentication" /etc/ssh/sshd_config
sudo systemctl restart sshd
ssh username@127.0.0.1
sudo nano /etc/ssh/sshd_config
PermitRootLogin yes
PasswordAuthentication yes