Search Appliance
Allows you to customize the expiration of cookies served by the Search Appliance. This applies to logins to the administrative interface, and by default also applies to some results authorization logins (See here).
Choose Session to provide login cookies that disappear when the user
closes their browser.
Choose Duration to choose a custom duration for the cookies, defaults to
1 year. Note that this duration is refreshed on every page load, so it
acts as an idle timeout.
This setting only applies to cookies created by the Search Appliance and given to users of the Search Appliance. It has no effect on how cookies are handled when the Search Appliance acts as a client when walking websites.
This also applies as an idle timeout for Webmin.