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Refreshing DNS Entries
Updating the Device Clock with an NTP Server
Copyright © 2010, Juniper Networks, Inc.
Reboot after delay of x minutes
delay period. Minimum and maximum time limits are based on the Device CLI.
Reboot at device local time:
reboot. Each device interprets this as its local time. A tool tip in the UI reminds you that
the time selected is the device local time.
You can cancel a scheduled reboot. NSM disables the cancel option if you set reboot
options and vice versa.
NOTE: NSM also provides a reboot option in the popup menu for EX Series switches,
SA and IC devices. You can right-click on the device you want to reboot from the device
tree, and select Reboot Device.
To enable a security device to use Domain Name System (DNS) to resolve domain names
to IP addresses, you configure the IP addresses of the primary and secondary DNS servers
on the device. The device can automatically refresh entries in its DNS table by checking
them with the specified DNS server at regularly scheduled times or intervals, or after an
HA failover.
You can also manually direct the device to refresh its DNS table entries. When you direct
the device to refresh its DNS entries, it connects to the previously configured DNS server
to perform a lookup of each entry in its table.
To direct one or more devices to refresh their DNS table entries:
From the Device Manager launchpad, select Others > Refresh DNS Entries from the
1.
Devices menu. The Refresh DNS Entries dialog box appears.
Select the devices or the group of devices on which DNS tables should be refreshed.
2.
Click OK. The Job Information window displays the status of the refresh.
3.
The security device can use the Network Time Protocol (NTP) to synchronize its system
clock with a configured NTP server over the Internet. You can configure the device to
perform this synchronization automatically at specific time intervals (see the Network
and Security Manager Online Help topic, "Configuring Firewall/VPN Devices"), or you can
direct the device to synchronize its clock immediately to a previously-configured NTP
server, as described in the following steps.
To direct one or more devices to synchronize their clocks:
From the Device Manager launchpad, select Others > Perform NTP Time Update.
1.
The Perform NTP Time Update dialog box appears.
Select the devices or group of devices that should be synchronized with NTP servers.
2.
Click OK. The Job Information window displays the status of the synchronization.
3.
: This reboots the selected devices after the specified
This allows you to choose the date and time for a device
Chapter 7: Managing Devices
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