Flow/Online Duration is to specify whether to collect statistics on various applications' traffic and Internet access duration. If you choose to collect the statistics, you can query the data center for traffic and Internet access duration of various applications used by intranet users to access the Internet.

Select Flow/Online Duration, and the Flow/Online Duration page appears on the right.

If you select Log application traffic based on user group, statistics on the traffic for each application to access the Internet through the IAG are collected and sorted by group. If you select Log application traffic for each user as well, the statistics can be collected by the user. This option provides a basis for Internet access traffic statistics collection and sorting in the data center. The options must be selected to query the data center for Internet access traffic information and rankings.

If you select Log online duration for each user based on application, statistics on the Internet access duration of each application that accesses the Internet through the IAG are collected. If this option is not selected, statistics on Internet access duration (including the total duration) of applications are not collected. You cannot query the data center for Internet access duration information and rankings.

If you select Ignore the traffic caused by the system rather than by user, such as system update, statistics on the Internet access duration of only the applications not in the Excluded Applications List, and access the Internet through the IAG are collected.

If you click Excluded Applications, the Excluded Applications window is displayed. It consists of three sections: Applications (exempted from online duration quota policy), Specified, and Excluded Port.

The Applications (exempted from the online duration quota policy) define some application traffic, such as the traffic for background software updates. You can Enable or Disable the list. In the Specified, you can select the applications to be excluded. You can enter the port numbers in the Excluded Port list to be excluded from the Internet access duration statistics collection.

If you select URL access traffic, the domain name collects statistics on the traffic for accessing the Internet through the IAG.

If you select URL access duration, the domain name collects statistics on the duration of accessing the Internet through the IAG.