lang/en/settings.php

<?php
$lang['allowed'] = "Comma separated list of allowed ip addresses";
$lang['test'] = "Comma separated list of ip addresses to test; testing limited to admins only";
$lang['log'] ="Keep a log of failed login attempts";
$lang['enable_test'] = 'Enable ip testing.   When checked, the test IPs and most incoming login attempts are tested against the <allowed> list and their status reported. When not checked, login attempts are not blocked. As a practical matter, this gives the admin a chance to set up an initial allowed list without being blocked.';