Login from something.com into application.something.com/clientApplicationPage/

[shunli]

I'm not sure if this can be made by protocol.Let's say we want, on something.com login index page, to allow the user to fill in their application username and password and, once that is done, to have him/her redirected into application.something/clientApplicationPage/ to see is details.Can I have some lights about what should I have into consideration in order to do something like this please?Thanks in advance,MEM