I was running into some problem with CSF (Config Server Security Firewall)
In the Edit Config Server Firewall (Loggin Settings) I noticed that LFD was not automatically blocking attacks on the server.
Log lfd messages to SYSLOG in addition to /var/log/lfd.log. You must have the
perl module Sys::Syslog installed to use this feature
I had to install the Sys::Syslog perl module to make it work.
[root]# yum install perl-Sys-Syslog
Restart CSF and check the message log to see if there is any error like:
localhost systemd: Unit lfd.service entered failed state.
localhost systemd: lfd.service failed.
All working good now 😉