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Difference between Citrix ICA client pass thru authentication and sson?

Posted on 2014-09-09
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Last Modified: 2014-09-10
Hello there,

What is the difference between Citrix ICA client pass thru authentication and sson?

Please advise.

Thanks and Regards
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Question by:goprasad
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Pedro Gama earned 2000 total points
ID: 40311852
Hi,

Basically during Pass-through authentication the user credentials are passed to a Web Interface site and then to the XenApp/XenDesktop servers, preventing users from having to explicitly authenticate at any point during the Citrix application launch process.  
The user's  credentials are actually never exchanged. Instead, the signed hash is provided to IIS, proving that said user had already been authenticated at the Windows desktop.  The web interface user uses the user’s AD context (sometimes referred to as a token) to retrieve the user’s AD group membership and pass this list of groups directly to the XML service for authentication.  At this point, the user has successfully passed through to the Web Interface site, and can now view his/her Citrix resources.

The Citrix Receiver makes sure the user is fully passed through to the application or desktop through a process called SSONSVR.exe, which is the single sign-on component of the client. This process is fully responsible for passing the user credentials to XenApp or XenDesktop and without it pass-through authentication would not work.

There's a very interesting citrix blog talking about pass-through-authentication here:

http://blogs.citrix.com/2013/04/01/explaining-citrix-pass-through-authentication/

Have a read!

Hope it helps
PG
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