*****UPDATE*****
I remade the hack, it has some bugs removed and it works alot cleaner and better than the first version, please remove all code from previous install (root/global.php and find iprestriction)
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****NEW IN 1.2****
1. Ability to turn off ip restriction
2. Ability to change fake block message to 404/403/redirect
3. It's now located in init.php so it covers also the admin pages (all pages)
4. Some security bugs were removed
5. It's more user-friendly and faster now ;)

Want your board as secure as can be? well Isiah had a solution for it, htaccess and ip restriction...
I don't like htaccess so i removed all of his code and made my own, you will find the ip masks syntax better.. ;)

When you add a member add his ip to Ip restriction field.
you can do multiple ip's.. like "62.12.54.12 62.12.54.54"
or you can also add ranges like "62.12.54.* 62.12.55.1"
you can add as many ip's as long as it's in that syntax...