This Counter64 counts connections for the protocol in cufwAppConnProtocol that were terminated after having been successfully established, and its value has accumulated since the firewall's last reboot. An admin can use it to distinguish connections that failed outright from ones that connected fine but were later cut off, which points toward application-layer resets or teardown events rather than setup failures. A steady climb in this counter for a database-related protocol row, for instance, would suggest sessions are being unexpectedly dropped mid-use rather than refused at connection time.