Dns; Dynamic Dns - D-Link DSL-2750U User Manual

Section 3 – Web Configuration

DNS

Domain name system (DNS) is an Internet service that translates domain names
into IP addresses. Because domain names are alphabetic, they are easier to
remember. The Internet, however, is actually based on IP addresses. Each time
you use a domain name, a DNS service must translate the name into the
corresponding IP address. For example, the domain name www.example.com
might be translated to 198.105.232.4.
The DNS system is, in fact, its own network. If one DNS server does not know
how to translate a particular domain name, it asks another one, and so on, until
the correct IP address is returned.
Choose ADVANCED > DNS. The page shown in the right figure appears.
If you are using the device for DHCP service on the LAN or using DNS servers
on the ISP network, select Obtain DNS server address automatically.
If you have DNS IP addresses provided by your ISP, enter these IP addresses in
the available entry fields for the preferred DNS server and the alternate DNS
server.
Click Apply to save the settings.

Dynamic DNS

The device supports dynamic domain name service (DDNS). The dynamic DNS
service allows a dynamic public IP address to be associated with a static host
name in any of the many domains, and allows access to a specified host from
various locations on the Internet. Click a hyperlinked URL in the form of
hostname.dyndns.org and allow remote access to a host. Many ISPs assign
public IP addresses using DHCP, so locating a specific host on the LAN using
the standard DNS is difficult. For example, if you are running a public web server
or VPN server on your LAN, DDNS ensures that the host can be located from the
Internet even if the public IP address changes. DDNS requires that an account
be set up with one of the supported DDNS service providers (DyndDNS.org or
dlinkddns.com).
Choose ADVANCED > Dynamic DNS. The page shown in the right page
appears.
Click Add to add dynamic DNS.
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