Greetings, [id://Biotachyonic], and welcome to PerlMonks.

• The only thing I have to work with is Perl.

What more do you need? :)

You may want to consider Apache::Session.pm or the possibility of using cookies and a simple user lookup table for authentication. Some folks use .htaccess for this kind of thing.

You'll stand a better chance of getting more substantive help if you narrow your question to a particular problem and post the relevant code. Good luck! :)