Device Tab User Identification Menu Captive Portal Settings sub tab Idle Timer (min) This is the user time to live (user TTL) setting for a captive portal session. This timer resets every time there is activity from a captive portal user. If the length of time the user is idle exceeds the idle timer, the captive portal user mapping will be removed and the user will have to log in again. (1-1440 minutes, default 15 minutes). Expiration (min) This is the maximum TTL, which is the maximum amount of time that any captive portal session can remain mapped. After the expiration duration has elapsed, the mapping will be removed and users will have to re-authenticate even if the session is active. This timer is used to ensure prevent stale mappings and the value set here overrides the idle timeout. Therefore, as a best practice, set the expiration to a value that is higher than the idle timer (range 1 - 1440 minutes; default 60 minute
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