Introduction Single Sign-On is a process that allows network users to access all authorized network resources without having to separately log in to each resource. Single Sign-On also gives your organization the ability to integrate with an external identity management system or perform web based single sign on to Force.com. How Single Sign-On Works The high-level process for authenticating users via Single Sign-On is as follows: 1. When a user tries to log in—either online or using the API—Salesforce validates the username and checks the user’s profile settings. 2. If the user’s profile has the "Uses Single Sign-on" user permission, then Salesforce does not authenticate the username with the password. Instead, a Web Services call is made to the user’s single sign-on service, asking it to validate the username and password. 3. The Web Services call passes the username, password, and sourceIp to a Web Service defined for your organization. (sourceIp is the IP address that ori...
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