Free Links Page - links.pl login!!!

HTTP 403 (Forbidden)

i have error when i login to admin section my web iste is :

http://labunista.awardspace.info/cgi-bin/links.pl

links.pl:

#!/usr/bin/perl
#########################################################################
#  Free For All Link Page v1.2                                          #
#  Copyright (c)2000 Chi Kien Uong                                      #
#  URL: http://www.proxy2.de                                            #
#                                                                       #
# This Software is distributed under the GNU General Public             #
# License. For more details see license.txt                             #
#                                                                       #
# Administration:                                                       #
# http://www.host.com/cgi-bin/links.pl?admin=enter                      #
#                                                                       #
# If you are having problems with the script, visit the support         #
# forum at: http://www.proxy2.de                                        #
#########################################################################

# url of script
$cgiurl = "http://labunista.awardspace.info/cgi-bin/links.pl";

# base url to all link files without trailing "/"
$link_url = "http://labunista.awardspace.info/links";

# base directory to all link files from the server root without trailing "/"
$base_dir = "/home/www/labunista.awardspace.info/links";

# default index page of your choice
$index_url = "http://labunista.awardspace.info/links/ffa-business.html";

# counter log file
$id_count = "links_id.txt";

# administration password
$admin_pass = "123";

# time to redirect to link page after entry (sec)
$redirect_sec = "3";

# use file locking; ($lock=0 for Win32)
$lock = 1;

# time offset - add one hour = +1 ; subtract one hour = -1
$fix_time  = 0;

# image
$imageurl = "arrow.gif";

# End setup
############################################