ZyXEL Communications LTE3301-PLUS, User Manual

Page: 207 / 361

Nebula Mobile Router User’s Guide
207
C
HAPTER
12
DNS
12.1 DNS Overview
DNS
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 servers, 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 servers. The Zyxel 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 Zyxel Device receives a DNS reply from a DNS server, it creates a new entry for
the resolved IP address in the routing table.
Note: For information on configuring DNS route, see Chapter 10 on page 184 .
12.1.1 What You Can Do in this Chapter
• Use the DNS Entry screen to view, configure, or remove DNS routes ( Section 12.2 on page 207 ).
• Use the Dynamic DNS screen to enable DDNS and configure the DDNS settings on the Zyxel Device
( Section 12.3 on page 209 ).
12.1.2 What You Need To Know
DYNDNS Wildcard
Enabling the wildcard feature for your host causes *.yourhost.dyndns.org to be aliased to the same IP
address as yourhost.dyndns.org. This feature is useful if you want to be able to use, for example,
www.yourhost.dyndns.org and still reach your hostname.
If you have a private WAN IP address, then you cannot use Dynamic DNS.
12.2 DNS Entry
DNS (Domain Name System) is used for mapping a domain name to its corresponding IP address and
vice versa. Use this screen to view and configure manual DNS entires on the Zyxel Device. Click
Network
Setting > DNS to open the DNS Entry screen.