We have a 10 domain license of Kentico and have deployed several sites that do not require any user authentication to view content. I am now looking at moving one of our secured "portals" over to Kentico so our business users can release content more frequently. We will need to use our existing authentication libraries which would work with a custom security handler.

1. If using the custom security handler is there a way to prevent the users from being registered in the Kentico database? We are dealing with a 10,000 plus user base that is constantly changing.

2. If we use the custom security handler does this replace the sign in to Site Manager and CMSDesk?

3. As long as the installation is on the same server can the web application be installed in more than one folder and share a database? That way the sites that do not require authentication are not affected by the "portal" site.