If user authenticate for parent website then no need to enter credentials for child website

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hi I am working with asp.net.I have two website(Parent.com and child.com) in different servers and both websites having its own login screen I want to provide automatic authenticate for child.com when a user logged in from Parent.com website if the user will trying to open child.com and he is already logged in to the parent.com website then no need to show the login screen of child.com it will automatic authenticate that user and he will able enter the child.com website freely.Please suggest me how would I do that.
Thanks
Prafulla

Posted 8-Oct-12 18:26pm

Prafulla Sahu

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Allan Chong · Answer 1 · 2012-10-08T22:02:00

Solution 1

It is not possible with ASP.NET out of the box.

Forms based authentication is based on a cookie and cookies can only be set to a specific domain.

If you want cross domain (not sub domains) shared authentication, you need a Single Sign On solution.

Have a look at this article Here and here

Posted 8-Oct-12 22:02pm

Allan Chong

Updated 8-Oct-12 22:06pm

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Prafulla Sahu 9-Oct-12 4:45am

Thanks Allan for your suggestion

Allan Chong 10-Oct-12 3:12am

It would be great if you can mark this as an accepted answer :)