Our dating site uses your software, and it goes thru a chat.aspx to pull the member name into the chatroom, so they do not have to do a login to the chatroom, it pulls their current member name from our database.  However, somebody can login using http://oursite.com/chat.aspx and  log right onto the site - it returns the username ERROR, but they can chat away with the username ERROR if they want.

 

Can we block the username ERROR, so outsiders cannot log on without going thru our website.