ZyXEL Communications N4100 User Manual

Chapter 25 Wireless LAN
N4100 User’s Guide
199
• Every device in the same wireless network must use security compatible with
the AP.
Security stops unauthorized devices from using the wireless network. It can also
protect the information that is sent in the wireless network.
25.5.2 Additional Wireless Terms
The following table describes some wireless network terms and acronyms used in
the N4100’s Web Configurator.
25.5.3 Wireless Security Overview
The following sections introduce different types of wireless security you can set up
in the wireless network.
25.5.3.1 SSID
Normally, the N4100 acts like a beacon and regularly broadcasts the SSID in the
area. You can hide the SSID instead, in which case the N4100 does not broadcast
the SSID. In addition, you should change the default SSID to something that is
difficult to guess.
Table 49 Additional Wireless Terms
TERM DESCRIPTION
RTS/CTS Threshold In a wireless network which covers a large area, wireless devices
are sometimes not aware of each other’s presence. This may cause
them to send information to the AP at the same time and result in
information colliding and not getting through.
By setting this value lower than the default value, the wireless
devices must sometimes get permission to send information to the
N4100. The lower the value, the more often the devices must get
permission.
If this value is greater than the fragmentation threshold value (see
below), then wireless devices never have to get permission to send
information to the N4100.
Preamble A preamble affects the timing in your wireless network. There are
two preamble modes: long and short. If a device uses a different
preamble mode than the N4100 does, it cannot communicate with
the N4100.
Authentication The process of verifying whether a wireless device is allowed to use
the wireless network.
Fragmentation
Threshold
A small fragmentation threshold is recommended for busy networks,
while a larger threshold provides faster performance if the network
is not very busy.

ZyXEL Communications N4100 Specifications

General

Number of users	100 user(s)
Ethernet LAN data rates	10, 100 Mbit/s
Maximum data transfer rate	100 Mbit/s
Indoor range	35 ~ 100 m
Outdoor range	100 ~ 300 m
Connectivity LEDs	Yes
Internal	No
Certification	FCC, CE, C-Tick, NCC, RoHS, WEEE
Security algorithms	802.1x RADIUS
Power requirements	100-240 VAC, 50/60 Hz, 0.5 A
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	0 - 50 °C
Operating relative humidity (H-H)	10 - 95 %

Weight and Dimensions

Weight	565 g
Dimensions (WxDxH)	222 x 146 x 152 mm