#!/usr/bin/perl
use strict;
use warnings;
use WWW::Mechanize;

my $url= 'http://10.11.12.13/password.html';
my $mech = WWW::Mechanize->new( autocheck => 1 );
$mech->credentials(
    '10.11.12.13:80',
    'ABCDEF',
    'admin' => 'password'
);
$mech->get( $url );
print $mech->content();