User's Manual
UTT Technologies Chapter 7 Advanced Setup
http://www.uttglobal.com Page 150
Device. Refer to section 7.6.3.1 Apply for a DDNS Account from 3322.org for
detailed operation.
7.7.4 DDNS Verification
To verify whether DDNS is updated successfully, you can use the ping command at the
MS-DOS command prompt on the PC, for example: ping abc.iplink.com.cn
If the displayed page is similar to the screenshot below: the domain name is resolved to
an IP address successfully (200.200.202.152 in this example), DDNS is updated
successfully.
Note
1. After you have finished configuring an Internet connection, the Device will
automatically enable NAT. Then when you ping the DeviceΒΆs domain name from the
Internet, the domain name can be resolved to its mapped IP address successfully, but
the Device will not respond to the ping request. If you want to ping this IP address,
please go to the Security > Attack Defense > External Defense page to select the
Enable WAN Ping Respond check box.
2. Only when the WAN interface IP address is a public IP address, the Internet users
can use its mapped domain name to access the Device normally.
3. DDNS feature can help you implement VPN tunnels using dynamic IP addresses on
the Device.