Not familiar with ClearOS, but it looks RedHat-based? I know that RHEL doesn't provide Net::SSLeay in a package.
Option 1: Install the Perl module via CPAN (perl -MCPAN -e 'install Net::SSLeay') then tell yum/rpm to ignore that dependency (the package manager won't know about CPAN)
Option 2: Find a third-party RPM that provides it.
Here's something that looks likely to work, but disclaimer, I have no idea how trustworthy that site is.