You can clone with HTTPS or SSH.
<?php // fill in with network addresses in CIDR notation: $bans = array( 'xxx.xxx.xxx.xxx/yy' ); function checkban($ipstring) { global $bans; $ip = ip2long($ipstring); foreach ($bans as $ban) { $parts = split("/", $ban, 2); $net = ip2long($parts[0]); $cidr = (int)$parts[1]; if (($net >> $cidr) == ($ip >> $cidr)) return true; } return false; } if (checkban($_SERVER['REMOTE_ADDR'])) { // BANNED USER } else { // NORMAL USER } ?>