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How to authenticate automatically to the external portal from Page viewer?

Posted By:      Posted Date: August 31, 2010    Points: 0   Category :SharePoint
Page viewer web part gives iView to the website eg. http://www.test.com. This works fine! Our customer would like login to the external portal with attaching user name in the ur like http://www.test.com/abc?name=John. Or user single sign on to login to the external portal. Authentication to the external system should be automatical to the end-user so that they don't have to login manually to the www.test.com portal. How to do it?Kenny_I

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