Chapter 6 Network parameters
http://www.level1.com Page 39
Dynamic DNS (DDNS) is a service to resolve a fixed domain name to a dynamic IP address (such
as ADSL dial-up Internet access) services. You need to apply to the DDNS service provider for
this service, and the specific service of DDNS is provided by various service providers according
to the actual situation. The DDNS service provider reserves the rights to change, interrupt or
terminate part or all of the network services. At present, the DDNS service is free of charge, when
the DDNS service provider may charge some fee for using DDNS services in providing network
services. In this case, LEVELONE will give a notice as soon as possible. If you refuse to pay such
expenses, you cannot use the related services. At the free stage, LEVELONE does not guarantee
the DDNS service must be able to meet the requirements, nor guarantee the service will not be
uninterrupted, nor guarantee the timeliness, safety, and accuracy of network services.
Interface: Selects the interface binding of the DDNS service.
6.5.1 DDNS authentication
You can use the Ping command (for example: ping avery12345.3322.org) in the DOS status of
intranet computers, to check if the DDNS update is successful. Upon seeing the correctly
parsed-out IP address (for example: 58.246.187.126), it indicates that domain name resolution is
correct. Note: Under normal circumstances, the device's IP address will not be pinged from the
Internet after NAT is used on the device but only the IP address for that domain name can be
parsed out.
1. Only when the IP address assigned by ISP (Such as China Telecom) to the WAN port
connection line can the domain name be sure to be accessed by Internet users.
2. The DDNS function can help the Dynamic IP use VPN and server mapping.
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