AntiSpam Modu?

phpBB 2.0.x kullanıyorum spam botları forumlarıma dadandı ve bunları engellemek için doğrulama kodu modu veya başka bir mod elinde olan varmı?

Al bunu kur o zaman robotlar sitene üye olamazlar ve mesaj atamazlar:

############################################################## 
## MOD Title: Unique Registration Hash 
## MOD Author: pentapenguin < n/a > (Jeremy Conley) http://www.pentapenguin.com 
## MOD Description: This MOD changes the "agreed=true" part of the registration 
## form to a unique identifier to help stop spam bots from registering. 
## 
## MOD Version: 0.1.0 
## 
## Installation Level: Easy 
## Installation Time: 5 Minutes 
## Files To Edit: 1 
## includes/usercp_register.php 
## 
## Included Files: N/A 
## License: http://opensource.org/licenses/gpl-license.php GNU General Public License v2 
############################################################## 
## For security purposes, please check: http://www.phpbb.com/mods/ 
## for the latest version of this MOD. Although MODs are checked 
## before being allowed in the MODs Database there is no guarantee 
## that there are no security problems within the MOD. No support 
## will be given for MODs not found within the MODs Database which 
## can be found at http://www.phpbb.com/mods/ 
############################################################## 
## Author Notes: 
## 
## Support for this MOD may be found at http://www.pentapenguin.com 
## This MOD is EasyMOD friendly! (http://area51.phpbb.com/phpBB/viewforum.php?f=17) 
## 
############################################################## 
## MOD History: 
## 
##   2006-08-19 - Version 0.1.0 
##   - Initial release 
## 
############################################################## 
## Before Adding This MOD To Your Forum, You Should Back Up All Files Related To This MOD 
############################################################## 


# 
#-----[ OPEN ]------------------------------------------ 
# 
includes/usercp_register.php 


# 
#-----[ FIND ]------------------------------------------ 
# 
$unhtml_specialchars_replace = array('>', '<', '"', '&'); 


# 
#-----[ AFTER, ADD ]------------------------------------------ 
# 

// Begin Unique Registration Hash MOD by pentapenguin (http://www.pentapenguin.com) 
$registration_hash = md5($userdata['session_ip'] . $userdata['session_id']); 
// End Unique Registration Hash MOD by pentapenguin 


# 
#-----[ FIND ]------------------------------------------ 
# 
   global $userdata, $template, $lang 


# 
#-----[ IN-LINE FIND ]------------------------------------------ 
# 
$phpEx 


# 
#-----[ IN-LINE AFTER, ADD ]------------------------------------------ 
# 
, $registration_hash 


# 
#-----[ FIND ]------------------------------------------ 
# 
      "U_AGREE_OVER13" => append_sid("profile.$phpEx 


# 
#-----[ IN-LINE FIND ]------------------------------------------ 
# 
agreed=true 


# 
#-----[ IN-LINE REPLACE WITH ]------------------------------------------ 
# 
agreed=$registration_hash 


# 
#-----[ FIND ]------------------------------------------ 
# 
      "U_AGREE_UNDER13" => append_sid("profile.$phpEx 


# 
#-----[ IN-LINE FIND ]------------------------------------------ 
# 
agreed=true 


# 
#-----[ IN-LINE REPLACE WITH ]------------------------------------------ 
# 
agreed=$registration_hash 


# 
#-----[ FIND ]------------------------------------------ 
# 
if ( $mode == 'register' && !isset($HTTP_POST_VARS['agreed']) && !isset($HTTP_GET_VARS['agreed']) ) 


# 
#-----[ IN-LINE FIND ]------------------------------------------ 
# 
!isset($HTTP_POST_VARS['agreed']) && !isset($HTTP_GET_VARS['agreed']) 


# 
#-----[ IN-LINE REPLACE WITH ]------------------------------------------ 
# 
$HTTP_POST_VARS['agreed'] != $registration_hash && $HTTP_GET_VARS['agreed'] != $registration_hash 


# 
#-----[ FIND ]------------------------------------------ 
# 
   $s_hidden_fields = '<input type="hidden" 


# 
#-----[ IN-LINE FIND ]------------------------------------------ 
# 
name="agreed" value="true" 


# 
#-----[ IN-LINE REPLACE WITH ]------------------------------------------ 
# 
name="agreed" value="' . $registration_hash . '" 

# 
#-----[ SAVE/CLOSE ALL FILES ]------------------------------------------ 
# 
# EoM

Bu mod tam olarak ne yapıyor?

spam botların siteye kayıt olmasını engeller, bak modun tanıtımkısmında yazmış:

stop spam bots from registering
Spam botların kaydını durdurur

Bunun dışında ayriyeten admin panele girip genel ayarlar içinden güvenlik kodunu açman gerekli bölece daha garanti olur site adresin nedir ?