Yes, WP Ghost has 7G Firewall protection and you can activated for all server types.
7G Firewall is an advanced firewall supported by Jeff Starr: https://perishablepress.com/7g-firewall/
The 7G Firewall offers lightweight, server-level protection against various malicious requests, bad bots, automated attacks, spam, and many other types of threats and nonsense.
Note! 7G Firewall may not work with all server configurations. In case of functionality issues, select minimal or medium protection for more compatibility.
To activate 7G Firewall in WP Ghost follow this tutorial: 7G Firewall for WordPress