Using The D-Link Time Server - D-Link NetDefendOS User Manual

Example 2.23. Using the D-Link Time Server
To enable the use of the D-Link time server:
Command-Line Interface
gw-world:/> set DateTime TimeSynchronization=D-Link
Web Interface
1. Go to: System > Device > Date and Time
2. Select D-Link (preconfigured timesync server)
3. Click OK
Configuring Custom Time Servers
NetDefendOS can be configured to query multiple external time servers. By using more than a
single server, situations where an unreachable server causes the time synchronization process to
fail can be prevented. NetDefendOS always queries all configured time servers and then
computes an average time based on all responses. Internet search engines can be used to find
publicly available time servers.
Important: DNS servers need to be configured in NetDefendOS
Make sure at least one external DNS server is correctly configured in NetDefendOS so
that time server URLs can be resolved (see Section 3.10, "DNS"). This is not needed if
using IP addresses for the servers but is always needed if using the option of D-Link's
own time servers.
Example 2.24. Configuring Custom Time Servers
In this example, time synchronization is set up to use the SNTP protocol to communicate with
the time servers at the Swedish National Laboratory for Time and Frequency. The time server URLs
are ntp1.sp.se and ntp2.sp.se.
Command-Line Interface
gw-world:/> set DateTime TimeSynchronization=custom
Web Interface
1. Go to: System > Device > Date and Time
Chapter 2: Management and Maintenance
TimeSyncServer1=dns:ntp1.sp.se
TimeSyncServer2=dns:ntp2.sp.se
TimeSyncInterval=86400
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