Netgear DC112A – AirCard Smart Cradle User Manual
Network Settings
73
AirCard Smart Cradle
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MTU Size (in bytes). The normal MTU (maximum transmit unit) value for most
Ethernet networks is 1500 bytes, or 1492 bytes for PPPoE connections. Change the
MTU only if you are sure that it is necessary for your ISP connection. See
Ethernet networks is 1500 bytes, or 1492 bytes for PPPoE connections. Change the
MTU only if you are sure that it is necessary for your ISP connection. See
39.
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NAT Filtering. Network Address Translation (NAT) determines how the cradle
processes inbound traffic. Secured NAT protects computers on the LAN from attacks
from the Internet but might prevent some Internet games, point-to-point applications,
or multimedia applications from working. Open NAT provides a much less secured
firewall but allows almost all Internet applications to work.
processes inbound traffic. Secured NAT protects computers on the LAN from attacks
from the Internet but might prevent some Internet games, point-to-point applications,
or multimedia applications from working. Open NAT provides a much less secured
firewall but allows almost all Internet applications to work.
4.
Click the Apply button.
Your changes are saved.
Set Up the AirCard Smart Cradle as a Default DMZ Server
The default DMZ server feature is helpful when you are using some online games and
videoconferencing applications that are incompatible with Network Address Translation
(NAT). The cradle is programmed to recognize some of these applications and to work
correctly with them, but other applications might not function well. In some cases, one local
computer can run the application correctly if the IP address for that computer is entered as
the default DMZ server.
videoconferencing applications that are incompatible with Network Address Translation
(NAT). The cradle is programmed to recognize some of these applications and to work
correctly with them, but other applications might not function well. In some cases, one local
computer can run the application correctly if the IP address for that computer is entered as
the default DMZ server.
WARNING:
DMZ servers pose a security risk. A computer designated as the
default DMZ server loses much of the protection of the firewall and
is exposed to exploits from the Internet. If compromised, the DMZ
server computer can be used to attack other computers on your
network.
default DMZ server loses much of the protection of the firewall and
is exposed to exploits from the Internet. If compromised, the DMZ
server computer can be used to attack other computers on your
network.
The cradle usually detects and discards incoming traffic from the Internet that is not a
response to one of your local computers or a service that you configured in the Port
Forwarding/Port Triggering screen. Instead of discarding this traffic, you can specify that the
cradle forwards the traffic to one computer on your network. This computer is called the
default DMZ server.
response to one of your local computers or a service that you configured in the Port
Forwarding/Port Triggering screen. Instead of discarding this traffic, you can specify that the
cradle forwards the traffic to one computer on your network. This computer is called the
default DMZ server.
To set up a default DMZ server:
1.
Launch a web browser from a computer or wireless device that is connected to the
Smart Cradle.
Smart Cradle.
2.
In the address field of the browser, enter http://netgear.cradle or http://192.168.100.1.
A login prompt displays.
3.
Enter the cradle user name and password.
The user name is admin. The default password is password. The user name and
password are case-sensitive.
password are case-sensitive.