My site is private, and I do not want search engines to access it or bots to know the file structure. I followed the instructions in post-41787 (harveysamui) - I disabled the User Profile Page indexing options in Dashboard > Forums > Settings > Features admin page, and I added the text below to functions.php, then deleted the cache:
$options['topics_sitemap'] = 0;
Neither of these worked; I still have complete access to the sitemaps. I am running wpForo 1.7.0. Any other options?