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To make the NTP function operational, you must configure at least one NTP server (host). You can
configure up to 10 NTP servers. The VPN Concentrator queries all of them and synchronizes its system
clock with the derived network time.
Figure 5-17: Configuration | System | Servers | NTP screen
Configuration | System | Servers | NTP | Parameters
This Manager screen lets you configure the NTP synchronization frequency parameter; i.e., how often
the VPN Concentrator queries NTP servers to synchronize its clock with network time.
Figure 5-18: Configuration | System | Servers | NTP | Parameters screen
Sync Frequency
Enter the synchronization frequency in minutes. Minimum is 0 , which disables the NTP function, default
is 60 , maximum is 10080 minutes (1 week).
Apply / Cancel
To apply your NTP parameter setting and include the setting in the active configuration, click Apply . The
Manager returns to the Configuration | System | Servers | NTP screen.
Reminder:
To save the active configuration and make it the boot configuration, click the Save Needed icon at the
top of the Manager window.
To discard your settings, click Cancel . The Manager returns to the Configuration | System | Servers | NTP
screen.
VPN 3000 Concentrator Series User Guide
Configuration | System | Servers | NTP | Parameters
5-19
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