title: Sharepoint and custom login maybe FBA
body: <p>We have a moss internet facing publishing site, we need to restrict access to this web site to people who have come from another specific web site (using the http header referrer property).</p>
  
  <p>This has to be an automatic process (the user should not have to click ‘login’ or anything like that). </p>
  
  <p>How to do this? Any advice greatly appreciated.</p>
  
  <p>I don’t really want to attempt to write a custom membership provider; that seems like a huge amount of work.</p>