SMC7904BRA3 User Manual
3.6 Advance Click Advance in the menu to open the sub-menu which contains 8 items: DNS, Firewall, Virtual Server,
Routing, IP QOS, Anti-dos, Port Mapping and Others.
3.6.1 DNS
Short for Domain Name System (or Service or Server), an Internet service that translates domain names
into IP addresses. Because domain names are alphabetic, they are easier to remember. The Internet however,
is really based on IP addresses. Every time you use a domain name, therefore, a DNS service must translate
the name into the corresponding IP address. For example, the domain name www.example.com might
translate 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.
Click DNS in the sub-menu to open the screen of Fig 3.6.1.
Fig 3.6.1
Label Description
Obtain DNS Automatically When this checkbox is selected, this 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 When this checkbox is selected, please enter the primary and optional
secondary DNS server IP addresses.
Apply Changes Click this button to save the settings of this page.
Reset Selected Click this button to begin configuring this screen afresh.
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