from authenticate + Iframe -> PROBLEM

I've got my page in an Iframe.
When I authenticate using dotnet 2.0, and when I'm in the iframe, the
authentication never succeds. and all time I return to the login page.
When I'm out of the i-frame it works.

How can I do this, so that it works within the iframe, without using
cookieless state ?

Thanks for your help.

Without using cookieless? That means you want to do this using cookies?

I'm not sure what you're getting at but surely you can just check a session variable to see if the user has logged in. You have given us no details as to what your authentication actually is.