Let's dig deeper into two specific application types: Regular Web Applications and Single Page Applications (SPAs). This applies to SAML scenarios and other scenarios covered in the next sections. It is not necessary to log the users out of this session layer, but you may be able to use Auth0 to force the logout, if required, by passing a parameter to the Auth0 logout endpoint (if supported by third-party IdP). Identity Provider Session Layer Logout.You can log users out of the Auth0 session layer by redirecting them to the Auth0 logout endpoint so Auth0 can clear the SSO cookie. For the Application Session Layer, there is nothing within your Auth0 tenant that you need to use to facilitate session termination. Logging users out of your applications typically results in their application session being cleared, and this should be handled by your application. This includes options for providing different levels of logout and also determining where the user will land after the logout is complete: Auth0 provides tools to help you give users the ability to log out. Logout in the context of Auth0 implementation is the act of terminating an authenticated session. If the user is already logged in at the authentication domain, the central authentication server will automatically re-authorize and re-consent (if required) the user’s request to the application and then the user can be immediately redirected to the original domain without signing in again. Whenever users go to a domain that requires authentication, they are redirected to the centralized authentication domain where they may be asked to log in. The user signs in only one time, hence the name of the feature (Single Sign-on). Single Sign-on (SSO) occurs when a user logs in to one application and is then signed in to other applications in that agent/browser automatically. Read this article to learn more about the difference between ID and access tokens. ID tokens represent authentication, contain information about the user who authenticated, and are intended for the application the user is using. Access tokens represent authorization and are intended to grant the bearer access to an API either on behalf of a user or an application. On the other hand, tokens are signed information that Auth0 sends back to the client application in a way to securely exchange the user authentication and authorization decisions with the client applications. So if a user leaves an application but later returns and attempts to log in before the session expires, they will not have to enter their credentials again. The session will last until a set expiration time, or the user logs out, or the SSO session cookie is deleted from the user’s browser. When a user successfully logs in, a session is created and maintained by Auth0 and indicates that the user has logged in and does not need to re-authenticate for the duration of that session. In addition to the above session layers, the application also has to be aware of token expirations, especially in OIDC flows. IdP session: This session is involved when Auth0 is federating to another third-party IdP, such as Google, Twitter, and so on.The next time a user is redirected to the Auth0 login page, the user's information will be inferred. Auth0 also keeps a session for the user and stores their information inside a cookie. For this, it may have to create a session (for example, by using cookies or depending on its access token expiration). Though the application uses Auth0 to authenticate users, it may still need to track that the user has logged in to the application. In the Auth0 context, there are basically three layers of sessions: A single session can contain multiple activities (such as page views, events, social interactions, and e-commerce transactions), all of which are kept in the session storage temporarily while the user is connected. SessionsĪ session identifies the user to the app after they have logged in and is valid for a period of time during which the user can perform a set of interactions within that application.
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This article describes scenarios on how to avoid such issues and implement approaches to maintain app sessions. Customers often implement some kind of polling against Auth0 /authorize endpoint to determine the session validity, and this may not be viable given the potential impact of hitting rate limits, ITP, and third-party cookie issues. For example, an application using Auth0 as its IdP can determine the validity of an Auth0 session via the use of /authorize endpoint. The solution to these challenges may seem simple at first, but upon closer examination, we may discover problems that are not so simple to solve. Managing application sessions when an Identity Provider (IdP) is involved may be challenging.
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