I don't use or have Siteminder, but have to support a customer of our product who wants to use it and therefore want to ask around here how Sitemidner works with IIS.
I have a Linux system that is not to be changed. It can forward the user towards an IIS-page. The URL contains a nounce. That IIS-page then uses e.g. Kerberos based authentication with single sign on. It is very simple and just learns the name of the user (asp.net provides that) and then creates a ticket containing nonce and username and redirects back towards the closed Linux system that is not to be changed.
This works fine using Kerberos or NTLM and Windows integrated authentication.
How would this work with Siteminder? Would they also provide the username of the currently logged in user towards an asp.net application? Would they support redirects?
I'd like them to just have written an ISAPI extension or so that parses their cookies and then lets my simple asp.net page run.