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492
12.7
Scheduled Events
BAT54-Rail/F..
Release
7.54
06/08
Time-controlled rules do not only provide the settings of particular val-
ues, it is even possible to switch to a whole different configuration. This
possibility allows you to pool a whole string of settings and change them
all at once with one command. Therefore changing the configuration of
the device with completely different values at the weekend and switching
back on monday mornings can be done with just one command.
Additionally the regular update of the newest firmware from one single
source is adjustable.
D Email messages
With the time-controlled rules you have the option that the BAT informs
the administrator by email not only about specific firewall events, but
even to set times. The email can e.g. inform about building up an internet
connection successfully after an enforced disconnection or after booting
the device because of a restart.
D time-dependant interfaces
The time dependant use of interfaces for a set duration is also provided
by the time-controlled rules. Therewith e.g. a WLAN interface can permit
the wireless access to the network only at certain times.
D Deleting certain tables
It can be useful to delete the content of some tables in LCOS regularly. If
your internet access for example has a monthly limited transfer volume,
you can delete your accounting table monthly to have a survey of the
present transferred data volume.
12.7.2 CRON jobs with time delay
CRON jobs are used to carry out recurring tasks on a BAT automatically at
certain times. If the installation features a large number of active devices, all
of which are subjected to the same CRON job at the same time (e.g. updating
a configuration by script), unpleasant side effects can result if, for example,
all devices try to establish a VPN connection at once. To avoid these effects,
the CRON jobs can be set with a random delay time between 0 and 59 min-
utes.
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