What is cPHulk?
cPHulk is a service that provides protection for your server against brute force attacks. cPHulk guards against Brute-Force attacks on Login attempts to services after a connection has been made.
This can be observed and configured within "WHM » Security Center » cPHulk Brute Force Protection."
cPhulk monitors the following web servers and services:
cPanel services (Port 2083).
WHM services (Port 2087).
Mail services (Dovecot and Exim).
The Pure-FTPd service.
Secure Shell (SSH) access.
For more information regarding cPHulk and its configuration, please read the following documentation: