We analyzing the implementations approach, for a scenario.
- External Site: To log-in to external site which has its own user store and is hosted on different domain. So user has to provide his user id and password for logging in to external site like e.g. DOMAIN1\UserName & Password
- SharePoint Site: This site is hosted on different domain other than DOMAIN1 and has got windows/forms authentication. So the user to login to SharePoint site has to provide SharePoint site Credentials DOMAIN2\UserName & Password.
- SharePoint Web Part which shows external site in IFrame and allows user to perform CURD operation once the user is authenticated in external site.
What we want is once user login to SharePoint site using (Forms/Windows) authentication, he should be automatically authenticated in External Site (using some mechanism) the logged in user credentials are picked up from some store based on his
sharepoint username and system authenticates the user on external site.
Any pointers to code/blogs/articles would be really helpful.
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