Login Security Module

This is one of the most powerful Drupal security module. This module will limit rate of login attempts and block the access. You can set this limit and block an IP temporary or permanent. You can also configure it to send you a notification if someone tries to brute force the login page. Review collected by and hosted on G2.com.

Well honestly it's good to see what Drupal has achieved so far however there is a little lag or you can say it's freezing while loading Review collected by and hosted on G2.com.