User's Manual

Chapter 1 Introduction 10
• Back up the configuration (and make sure you kn
ow how to restore it). Restoring an earlier
working configuration may be useful if the device becomes unstable or even crashes. If you forget
your password, you will have to reset the Device to its factory default settings. If you backed up an
earlier configuration file, you would not have to totally re-configure the Device. You could simply
restore your last configuration.
1.4 Applications for the Device
Here are some example uses for the Device.
1.4.1 Internet Access
Your Device provides shared Internet access by connecting the DSL port to the DSL or MODEM jack
on a splitter or your telephone jack. Computers can connect to the Device’s LAN ports (or
wirelessly).
Figure 1 De
vice’s Router Features
DSL
LAN
Configure firewall and filtering features on the Device for secure Internet access. Set the firewall to
allow responses from the Internet for traffic initiated from your network and block traffic initiated
from the Internet. This blocks probes from the outside to your network, but lets you safely browse
the Internet and download files.
Use the filtering feature to block acce
ss to specific web sites or Internet applications such as MSN or
Yahoo Messenger. You can also configure IP/MAC filtering rules for incoming or outgoing traffic.
Use QoS to efficiently manage traffic on your ne
twork by giving priority to certain types of traffic
and/or to particular computers. For example, you could make sure that the Device gives voice over
Internet calls high priority, and/or limit bandwidth devoted to the boss’s excessive file downloading.