HP VPN Firewall Appliances Getting Started Guide

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3. Configure the time zone and daylight saving time as described in Table 15.
4. Click Apply.
Table 15 Configuration items
Item Descri
p
tion
Time Zone Set the time zone for the system.
Adjust clock for
daylight saving
time changes
Adjust the system clock for daylight saving time changes, which means adding one hour to
the current system time.
Click Adjust clock for daylight saving time changes to expand the option, as shown
in Figure 68. You can configure the daylight saving time changes in the following ways:
• Specify that the daylight saving time starts on a specific date and ends on a specific date.
The time range must be greater than one day and smaller than one year. For example,
configure the daylight saving time to start on August 1st, 2006 at 06:00:00 a.m., and
end on September 1st, 2006 at 06:00:00 a.m.
• Specify that the daylight saving time starts and ends on the corresponding specified days
every year. The time range must be greater than one day and smaller than one year. For
example, configure the daylight saving time to start on the first Monday in August at
06:00:00 a.m., and end on the final Sunday in September at 06:00:00 a.m.
Figure 68 Setting the daylight saving time
Configuring the system time at the CLI
You must synchronize your device with a trusted time source by using NTP or changing the system time
before you run it on the network. Network management depends on an accurate system time setting,
because the timestamps of system messages and logs use the system time. For NTP configuration, see
Network Management and Monitoring Configuration Guide.
In a small-sized network, you can manually set the system time of each device.
IMPORTANT:
If you reboot the device, the system time and date are restored to the factory default. To ensure an accurate
system time setting, you must change the system time and date or configure NTP for the device.
Configuration guidelines
You can change the system time by configuring the relative time, time zone, and daylight saving time. The
configuration result depends on their configuration order (see Table 16). In the first column of this table,
1 represents the
clock datetime command, 2 represents the clock timezone command, and 3 represents