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To configure the connection to automatically obtain a DNS server address, se-
lect Obtain DNS Server Address Automatically from the DNS Server drop down
menu.
Figure 4.7: Automatic DNS Settings
To manually configure DNS server addresses, select Use the following DNS server
addresses from the DNS server drop down menu (see figure 4.100). Specify up
to two different DNS server addresses, one primary and one secondary.
To learn more about this feature, refer to Section 6.2.
4.1.6 Routing
You can choose to setup your GlobeSurfer 3G to use static or dynamic routing.
Dynamic routing automatically adjusts how packets travel on the network,
whereas static routing specifies a fixed routing path to neighboring destina-
tions.
Routing Select Advanced or Basic routing.
Routing Mode When Advanced routing is selected, select one of the f ollowing
Routing modes:
Route Use route mode if you want your GlobeSurfer 3G to function as
a router between two networks.
NAT Network Address Translation (NAT) translates an IP address to a
valid, public address on the Internet. This adds security since in-
ternal LAN addresses are not transmitted over the Internet. In ad-
dition, NAT allows many addresses to exist behind a single valid
address. Use the NAT routing mode if your LAN consists of a sin-
gle device, otherwise collisions may occur if more than one device
attempts to communicate using the same port.
NAPT Network Address and Port Translation (NAPT) refers to network
address translation involving the mapping of port numbers, allow-
ing multiple machines to share a single IP address. Use NAPT if
your LAN encompasses multiple devices, a topology that necessi-
tates port translation in addition to address translation.
Figure 4.8: DNS Settings
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