A method, system, and computer readable medium for facilitating user authentication for accessing an application hosted on an external web site by users in an enterprise network. A request is received from a user a request is received from a user to access the application on the external web site. The user is redirected to a secure web page on an enterprise server to log in to the enterprise server. Authentication information for the user is formatted in compliance with a login specification for the application hosted on the external web site. The authentication information is encrypted in compliance with the login specification for the application hosted on the external web site. The user is then directed to the application hosted on the external web site, wherein the user can access the application without having to reenter login information.