SSO from client to web application

You can provide SSO from the client to Web applications and portal two these two mechanism

1. Light weight thrid party authentication(LTPA):


2. Authentication proxy:

The functional principal of these single sign-on solutions is essentially the same. Upon successful authentication the client gets a security token in the form of cookie(This is not persistent cookie, instead this cookie is deleted when clients browser session is closed) and the browser forwards this cookie to the servers web applications in that domain. The application server or Authentication proxies read authentication information from the cookie and let user in without reprompting for password