Hight Security Vulnerabilities

[Me.B]

You are not in this case as I said previously. Seem this is confusing.

[iraqiboy90]

It's a hardening ADVICE ! I meant if you you use it that way and add the firewall restriction, you will end up locking down any further risk.

And how can I do this?
I use CSF Firewall.

Use htaccess instead

If you are running Centos, edit this file with VIM or VI
/etc/sentora/panel/.htaccess

Add at the end of the file:
deny from all
allow from x.x.x.x

This will block everything trying to access the panel through http and allow only the IP you have written. You can have multiple allow from