Cross domain Authentication
<p>Client have a site built using Wordpress.  We have built a web app for them in asp.net on a subdomain.  Client now wants a login to the .net web app on the homepage of their wordpress site.<br>
Obviously this needs to be secure.</p>

<p>How would this cross domain auth usually be performed?</p>

<p>Can it be done in an iframe or is some other method preferred></p>

<p>Thanks</p>

<p>Wing</p>
