Manual:ResetAuthenticationThrottle.php/en

resetAuthenticationThrottle.php can be used to clear the authentication throttle for a specified username or IP address.

Usage
 Reset authentication throttle for a specified username and IP address:  Reset account creation throttle for a specified IP address:  

Options

 * - username to clear throttles from
 * - IP address to clear throttles from
 * - when specified, this script will clean the login throttle for the specified username and IP address combination
 * - when specified, this script will clean the account creation throttle for the specified IP address