Managing your firewall from the command line is a bit hard. We have pre-configured firewall rules applied in your server. This is for extra security.
To easily make changes in the firewall rules just log in to your hosting panel then go to “Firewall”. It is best to suspend rules that you don’t use.
You can add rules by clicking the “plus” icon or “Add rule.”
To ban an IP address:
firewall > list fail2ban > ban IP address
IMPORTANT: Do not suspend or delete the “PING” rule.