What is Single logout (SLO)?

Single logout (SLO) is an identity and access management process that signs a user out of multiple connected applications after one logout action.

It is commonly used with federated authentication and single sign-on. Instead of ending only the local app session, Single logout (SLO) attempts to close related sessions at the identity provider and participating service providers, reducing the risk of abandoned active sessions.

How does it work?

When a user clicks sign out, the application or identity provider sends logout messages to other trusted systems in the federation. Depending on the protocol and configuration, this can happen through browser redirects, front-channel messages, back-channel server calls, or a centralized end-session endpoint.

The result depends on every application supporting the logout flow correctly. If one service ignores the request, has a separate session, or is offline, the user may appear logged out in one place while another session remains active.

Single logout (SLO) vs single sign-on (SSO)

SSO simplifies login by allowing one authenticated identity to access multiple applications. SLO focuses on the end of that access by coordinating logout across those applications.

They solve opposite sides of the same session problem. SSO improves usability and access consistency, while SLO helps reduce session exposure when a user leaves a shared device, offboards, changes roles, or ends work in a regulated environment.

How Hexnode supports Single logout (SLO)

Hexnode supports SLO-related security goals by helping IT teams connect identity systems with endpoint governance. Through UEM and identity-aware controls, teams can strengthen policy enforcement, validate device posture, perform compliance checks, manage application controls, and take remote actions when a risky session or device state needs follow-up.

This matters because logout is not only an identity event. In distributed environments, organizations often need endpoint visibility to know whether the device is managed, compliant, patched, encrypted, restricted, or potentially exposed after a session ends.

When should organizations use it?

Organizations should use SLO when employees access multiple cloud apps through SSO, especially on shared, frontline, kiosk, contractor, or BYOD devices. It is also useful where compliance teams need stronger evidence that access is terminated consistently.

SLO should be prioritized for sensitive systems such as admin consoles, HR platforms, financial applications, healthcare records, developer tools, and customer data portals. It should not be treated as a complete replacement for session timeout, token expiry, device compliance, MFA, or access reviews.