No POD found for realms.conf. Time to read the source?
realms.conf
To install HTTPD::Authen, copy and paste the appropriate command in to your terminal.
cpanm
cpanm HTTPD::Authen
CPAN shell
perl -MCPAN -e shell install HTTPD::Authen
For more information on module installation, please visit the detailed CPAN module installation guide.