3.5 Service
In the navigation bar, click
Service
. In the
Service
page that is displayed contains
DNS
,
Firewall
,
UPNP
,
IGMP Proxy
,
TR-069
, and
ACL
.
3.5.1 DNS
Domain Name System (DNS) is an Internet service that translates the domain name into
IP address. Because the domain name is alphabetic, it is easier to remember. The
Internet, however, is based on IP addresses. Every time you use a domain name, DNS
translates 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 has 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
Service
>
DNS
.
The
DNS
page that is displayed contains
DNS
and
DDNS
.
3.5.1.1 DNS
Click
DNS
in the left pane, the page shown in the following figure appears.
The following table describes the parameters and buttons of this page:
Field
Description
Attain DNS Automatically
Select it, the router accepts the first received DNS
assignment from one of the PPPoA, PPPoE or MER
enabled PVC(s) during the connection establishment.
Set DNS Manually
Select it, enter the IP addresses of the primary and
secondary DNS server.
Apply Changes
Click it to save the settings of this page.
Reset Selected
Click it to start configuring the parameters in this
page.
53
