Administrator's Guide - Kerio Software Archive

Chapter 21
Kerio StaR - statistics and reporting
The Kerio Control’s web interface provides detailed statistics on users, volume of transferred
data, visited websites and web categories. This information may help figure out browsing
activities and habits of individual users.
The statistics monitor the traffic between the local network and the Internet. Volumes of data
transferred between local hosts and visited web pages located on local servers are not included
in the statistics (also for technical reasons).
One of the benefits of web statistics and reports is their high availability. The user (usually
an office manager) does not need the Administration Console and they even do not need Kerio
Control administrator rights (special rights are used for statistics). Statistics viewed in web
browsers can also be easily printed or saved on the disk as web pages.
Notes:
1. The firewall administrator should inform users that their browsing activities are
monitored by the firewall.
2. Statistics and reports in Kerio Control should be used for reference only. It is highly
unrecommended to use them for example to figure out exact numbers of Internet
connection costs per user.
3. For correct functionality of the Kerio StaR interface, it is necessary that the firewall host’s
operating system supports all languages that would be used in the Kerio StaR interface.
Some languages (Chinese, Japanese, etc.) may require installation of supportive files. For
details, refer to documents regarding the corresponding operating system.
This chapter addresses setting of parameters in the Kerio Control administration. The Kerio
StaR interface is described thoroughly in the Kerio Control — User’s Guide.
21.1 Monitoring and storage of statistic data
Diverse data is needed to be gathered for the statistics. Statistic data is stored in the database
(the star\data subdirectory of the Kerio Control’s installation directory — for details, see
chapter 25.1). Total period length for which Kerio Control keeps the statistics can be set in
the Accounting section of the Administration Console (see chapter 21.2). By default, this time
is set to 24 months (i.e. 2 years).
For technical reasons, the Kerio Control Engine stores gathered statistic data in the cache (the
star\cache subdirectory) and data is recorded in the database once per hour. The cache is
274