ZyXEL Communications Corporation VMG1312B10A Manuel D’Utilisation

VMG1312-B10A User’s Guide

DNS (Domain Name System) is for mapping a domain name to its corresponding IP address and 
vice versa. The DNS server is extremely important because without it, you must know the IP 
address of a machine before you can access it. 

In addition to the system DNS server(s), each WAN interface (service) is set to have its own static 
or dynamic DNS server list. You can configure a DNS static route to forward DNS queries for certain 
domain names through a specific WAN interface to its DNS server(s). The Device uses a system 
DNS server (in the order you specify in the Broadband screen) to resolve domain names that do 
not match any DNS routing entry. After the Device receives a DNS reply from a DNS server, it 
creates a new entry for the resolved IP address in the routing table.

Dynamic DNS allows you to update your current dynamic IP address with one or many dynamic 
DNS services so that anyone can contact you (in NetMeeting, CU-SeeMe, etc.). You can also access 
your FTP server or Web site on your own computer using a domain name (for instance 
myhost.dhs.org, where myhost is a name of your choice) that will never change instead of using an 
IP address that changes each time you reconnect. Your friends or relatives will always be able to 
call you even if they don't know your IP address.

First of all, you need to have registered a dynamic DNS account with www.dyndns.org. This is for 
people with a dynamic IP from their ISP or DHCP server that would still like to have a domain name. 
The Dynamic DNS service provider will give you a password or key. 

• Use  the  DNS Entry screen to view, configure, or remove DNS routes (

• Use  the  Dynamic DNS screen to enable DDNS and configure the DDNS settings on the Device 

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