Some people caution against allowing the libwww-perl user-agent to crawl or access your website.
To prevent this type of access, you can add something like the following to your Apache configs (httpd.conf or .htaccess):
RewriteEngine on
RewriteCond %{HTTP_USER_AGENT} libwww-perl [NC]
RewriteRule .* – [F]
This will prevent the User-Agent libwwwl-perl from accessing your site and they will be served a 403 (Forbidden) error.
