How Automated Sign-on for Mainframe Works
Follow the flow of activity from the end user's terminal logon through the automated sign-on to the mainframe application.
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Launch the emulation client (such as Reflection or InfoConnect Desktop, Host Access for the Cloud, or Rumba+), and authenticate to the MSS Administrative Server. The client connects to the host, which prompts for the user’s credentials.
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The Client requests the user’s host credentials from the MSS Administrative Server.
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The MSS Administrative Server retrieves the user's mainframe user name from the data store of mapped mainframe user names.
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The MSS Administrative Server passes the host application ID and the end user's mainframe user name to Digital Certificate Access Server (DCAS) on the z/OS mainframe, and requests a PassTicket.
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DCAS exchanges information with RACF and retrieves a PassTicket, which is then returned to the MSS Administrative Server.
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The MSS Administrative Server returns the user's mainframe user name and the PassTicket to the emulation client.
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The terminal emulation client's login macro sends the user's mainframe user name and PassTicket to the host application. The user is automatically logged on.