Looking for a high level design on implementing SharePoint 2010 Initiated workflow to Siteminder Protected application and vice versa.
Example. I have 2 Sites say a.com and b.com. Where a.com is protected by siteminder against Active Directory[sayad.com] and b.com is a sharepoint site  and ia authenticated against same AD.com however this site is non siteminder protected.
Use Case 1: User logs to a.com and if user want to access b.com then sso should be enabled
Use Case 2: User logs to b.com and if user want to access a.com then sso should be enabled
In order to get SSO between 2 different sites (a.com or b.com), you should
enable Federation between both, or have SiteMinder to protect both side
and share the same key store.
Note that you can protect SharePoint server with an Agent for SharePoint
which one will integrate with SiteMinder.
Tell us if you need further precisions.