Anyone know does serendipity have an equivalent plugin to wordpress's Bad Behavior plugin? This is what was causing exact Live Writer problems on wordpress and i'm getting the same errors

I've been using Live Writer for about 3 months now, working beautifully! All of a sudden today, it is failing and giving me this message when trying to publish:

The server reported an error with the following URL:

http://www.koochonline.com/serendipity_xmlrpc.php

403 Forbidden

I can access this ...