yum install perl-libwww-perl.noarch perl-Time-HiRes

wget https://download.configserver.com/csf.tgz
tar zxfv csf.tgz

cd csf
sh install.sh

cd /usr/local/csf/bin/
perl csftest.pl

You should get the following:

RESULT: csf should function on this server

systemctl stop firewalld
systemctl disable firewalld

cd /etc/csf/
vim csf.conf

systemctl start csf
systemctl start lfd
systemctl enable csf
systemctl enable lfd

If you enable statistics you will need the following libraries for the option to appear and function.

yum install perl-GDGraph3d

• Unable to connect to https://download.configserver.com, retry in 247 seconds. An Upgrade button will appear here if new version is detected

yum install perl-Crypt-SSLeay perl-LWP-Protocol-https

• Cant connect to Web UI

Make sure to restart lfd after enabling the UI, csf will not reload the lfd service.