I am trying to implement a single sign on between a coldfusion site and asp.net site. The authentication part is done so that the user has to sign in only once across the 2 sites but I am having difficulty trying to manage the timeouts between the 2 sites. When the asp.net site is active I want the CF site also to be active . .and when the cold fusion site timeouts the asp.net site also has to timeout. Is there any way to achieve this without resorting to third party software?