Before You Begin; Wireless Lan Overview - ZyXEL Communications NWD-270N User Manual

Chapter 3 Wireless LANs

3.1.3 Before You Begin

• You should have valid login information for an existing network Access Point, otherwise
you may not be able to make a network connection right away.

3.2 Wireless LAN Overview

The following figure provides an example of a wireless network with an AP. See
page 18 for an Ad Hoc network example.
Figure 22 Example of a Wireless Network
The wireless network is the part in the blue circle. In this wireless network, devices A and B
are called wireless clients. The wireless clients use the access point (AP) to interact with other
devices (such as the printer) or with the Internet
Every wireless network must follow these basic guidelines.
• Every device in the same wireless network must use the same SSID.
The SSID is the name of the wireless network. It stands for Service Set IDentity.
• If two wireless networks overlap, they should use a different channel.
Like radio stations or television channels, each wireless network uses a specific channel,
or frequency, to send and receive information.
• Every device in the same wireless network must use security compatible with the AP or
peer computer.
Security stops unauthorized devices from using the wireless network. It can also protect
the information that is sent in the wireless network.
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Figure 3 on
NWD-270N User's Guide