The maximum number of consecutive seconds an authenticated
session may be idle before termination of the session. A
value of zero indicates that no idle timeout will be applied.
This value MAY be superseded by a idle timeout value provided
by the authenticating server. For example, if a session is
authenticated by a RADIUS server, that server may encode a
Idle-Timeout Attribute in its authentication response. The
operational idle timeout value of a given authenticated
session is specified by the etsysMultiAuthSessionIdleTimeout
object.