LWP perl module (libwww-perl) missing error while installing CSF

[Spark]

While installaing CSF firewall on a plain Linux server, you may see below error message :
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# sh install.sh
Configuring for OS
Checking for perl modules failed
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This error occurs because some perl modules missing on the server. You just need to install the LWP perl module (libwww-perl) and then install csf.

To fix this issue we need to install the libwww-perl module via YUM :
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# yum install perl-libwww-perl
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Once done, CSF firewall will be installed successfully.