CentOS Webpanel(CWP) Installation Perquisite : Disable Firewalld

CentOS 7 comes with firewalld by default. So disable firewalld because CWP uses CSF Firewall & LFD with IPTables. Here
CSF - ConfigServer Security & Firewall
LFD - Login Failure Daemon

# systemctl stop firewalld.service

# systemctl disable firewalld.service
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

# systemctl mask firewalld.service
Created symlink from /etc/systemd/system/firewalld.service to /dev/null. 

Reboot your server so that all updates can take affect and then check your Firewalld Status.

# reboot 
# systemctl status firewalld