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Chapter 1 Introducing the ZyXEL Device
P-2612HNU-Fx User’s Guide
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1.2.1 Internet Access
Your ZyXEL Device provides shared Internet access by connecting the DSL port to
the DSL or MODEM jack on a splitter or your telephone jack. If you prefer not to
use a DSL line and you have another broadband modem or router (such as ADSL)
available, you can push the DSL/WAN switch (on the rear panel) to the WAN
side and connect the WAN port to the broadband modem or router. This way, you
can access the Internet via an Ethernet connection and still use the QoS, Firewall
and VoIP functions on the ZyXEL Device.
Computers can connect to the ZyXEL Device’s LAN ports (or wirelessly).
Figure 1 ZyXEL Device’s Internet Access Application
You can also configure firewall on the ZyXEL Device for secure Internet access.
When the firewall is on, all incoming traffic from the Internet to your network is
blocked unless it is initiated from your network. This means that probes from the
outside to your network are not allowed, but you can safely browse the Internet
and download files.
Use QoS to efficiently manage traffic on your network by giving priority to certain
types of traffic and/or to particular computers. For example, you could make sure
that the ZyXEL Device gives voice over Internet calls high priority, and/or limit
bandwidth devoted to the boss’s excessive file downloading.
LAN
PPPoE/PPPoA
IPoE/IPoA
Bridging (ADSL only)
WAN
ADSL/Ethernet