An update:

I've installed all the suggested modules, tried multiple ways to get around this, and I still haven't gotten it to work. It just won't accept the authentication, and takes me to a "username/password wrong" page instead of the next page. To add to the confusion, with my authentication steps, I can go to any page on the website through get($url), but I can't use a form or go to a new page through a link. Once I try, even get($url) stops working. Here's a quick update/simpler version to my code (just looking for a link now instead of a form):

#!usr/bin/perl

use strict;
use warnings;

# left some comments to show what I've tried

#require LWP::UserAgent;
#require HTTP::Request::Common;
#require HTTP::Response;
#use Crypt::SSLeay;
#use IO::Socket::SSL;
#use CGI::Form;
#use HTML::Form;
use WWW::Mechanize;
use MIME::Base64;

my $username = 'name';
my $password = 'password';
my $website = "https://www.url.com/";

my @args = (
       Authorization => "Basic " .
           MIME::Base64::encode( $username . ':' . $password ));


my $mech = WWW::Mechanize->new( );

$mech->credentials( 'www.url.come','Automated Analyses', $username, $p
+assword );
 
 # enabling cookies
use HTTP::Cookies;
$mech->cookie_jar(HTTP::Cookies->new());

my $url = "https://www.url.com/";

$mech -> get ($url);

# getting links
my @links = @{$mech->links};

# the 'enter' link on the front page
$mech->follow_link(n=> 5);

# and this prints the "401 error" page
print "\n\n", $mech->content, "\n";
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