The server logs show a spike at midnight. Access events from three different domains. Each user authenticated once, yet gained entry to every connected system. This is Identity Federation at work, and LNAV makes it visible without noise.
Identity Federation links separate identity providers so a single authentication grants access across multiple services. It reduces credential sprawl, lowers risk, and simplifies trust management between organizations. Federated identity solutions often use standards like SAML, OAuth, and OpenID Connect to enable secure token exchange between domains.
LNAV, short for Log Navigator, is a lightweight, terminal-based log viewer. It can parse, filter, and search massive log files in real time. When integrated into Identity Federation workflows, LNAV becomes an immediate lens into transactions and assertions between identity providers and service providers. Engineers can tail logs for the federation gateway, filter by protocol events, and inspect token validation results in seconds.
A common setup involves running LNAV on a security operations node connected to the federation service. When a user signs in via SAML, the IdP generates an assertion. LNAV can highlight the event, display timestamps, and help verify the signature exchange. For OAuth flows, LNAV can track the token issuance endpoint, the refresh cycles, and failures in bearer token validation. This reduces troubleshooting time for complex multi-domain systems.