User's Manual

III Features &Connectivity
64
Tip-------------------------------------------------------------------------------------------------------------------------
1. Be sure to statically set the IP Address of the computer that serves as a DMZ host for this
function to be consistent.
2. Security softwares such as anti-virus software and OS built-in firewall, etc may affect the DMZ
host feature. Disable them if DMZ host fails.
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4.3 DDNS
Dynamic DNS or DDNS is a term used for the updating in real time of Internet Domain Name
System (DNS) name servers. We use a numeric IP address allocated by Internet Service Provider
(ISP) to connect to Internet; the address may either be stable ("static"), or may change from one
session on the Internet to the next ("dynamic"). However, a numeric address is inconvenient to
remember; an address which changes unpredictably makes connection impossible. The DDNS
provider allocates a static host name to the user; whenever the user is allocated a new IP address
this is communicated to the DDNS provider by software running on a computer or network device
at that address; the provider distributes the association between the host name and the address to
the Internet's DNS servers so that they may resolve DNS queries. Thus, uninterrupted access to
devices and services whose numeric IP address may change is maintained.
Click Applications -> DDNS to enter the configuration screen.
Tip------------------------------------------------------------------------------------------------------------------------
1. To use the DDNS feature, you need to have an account with one of the Service Providers in the
drop-down menu first.
2. This router supports two DDNS service providers: dyndns and no-ip.
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DDNS Application Example:
If your ISP gave you a dynamic (changing) public IP address, you want to access your router
remotely (6.5 Remote Web Management
) but you cannot predict what your router's WAN IP
address will be, and the address can change frequently. In this case, you can use a commercial
Dynamic DNS service. It lets you register your domain to their IP address and forwards traffic
directed at your domain to your frequently changing IP address.
If you obtain the following account from your dyndns.org service provider:
 User Name: tenda
 Password: 123456