I have a requirement as follows. On a single web application extranet zone, multiple tips are installed using Site Minder. Here is my question, when i try to access a site, site minder login page comes first and after entering my credentials it will authenticate against the database then when it comes to sharepoint i can see the drop down box with multiple providers name. How can i avoid this page.. ? any idea?
There are different approaches you can take one such approach is detailed here: http://msdn.microsoft.com/en-us/library/hh237665.aspx
The article is really just replacing the default login page, with a new one that has will force authentication thru a chosen provider. This makes changes to the OOTB files, so remeber to:
Additonally, I would probably go a bit further and add the compiled project to an actual SharePoint solution so you dont have to manually update each server. Also the powershell bits is what hides the other providers from things like People Search, it's not required, but if no one will use the other authentication processes, then you dont need to see the accounts there.
You can also look at this codeplex solution provided by OrbitOne: http://spautomaticsignin.codeplex.com/releases/view/48105