What You Should Know; Wifi Security Overview - ZyXEL Communications NBG6515 User Manual

• Use the
Adva nc e d
BSS networking and set the RTS/CTS Threshold.
• Use the
Q o S
chat, and so on.
• Use the
WPS
without having to configure security settings manually.
• Use the
WPS De vic e
• Use the
Sc he duling
and off.
• Use the
G ue st WL AN
11.3 Wha t Yo u Sho uld Kno w
Every WiFi network must follow these basic guidelines.
• Every WiFi client in the same WiFi network must use the same SSID.
The SSID is the name of the WiFi network. It stands for Service Set IDentity.
• If two WiFi networks overlap, they should use different channels.
Like radio stations or television channels, each WiFi network uses a specific channel, or frequency, to
send and receive information.
• Every WiFi client in the same WiFi network must use security compatible with the AP.
Security stops unauthorized devices from using the WiFi network. It can also protect the information
that is sent in the WiFi network.
11.3.1 WiFi Se c urity O ve rvie w
The following sections introduce different types of WiFi security you can set up in the WiFi network.
11.3.1.1 SSID
Normally, the AP acts like a beacon and regularly broadcasts the SSID in the area. You can hide the
SSID instead, in which case the AP does not broadcast the SSID. In addition, you should change the
default SSID to something that is difficult to guess.
This type of security is fairly weak, however, because there are ways for unauthorized devices to get the
SSID. In addition, unauthorized devices can still see the information that is sent in the WiFi network.
11.3.1.2 MAC Addre ss Filte r
Every WiFi client has a unique identification number, called a MAC address.
written using twelve hexadecimal characters
the MAC address for each WiFi client, see the appropriate User's Guide or other documentation.
1. Some wireless devices, such as scanners, can detect WiFi networks but cannot use WiFi networks. These kinds
of wireless devices might not have MAC addresses.
2. Hexadecimal characters are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F.
Chapter 11 Wireless LAN
screen (Section 11.7 on page
screen (Section 11.8 on page
screen (Section 11.9 on page
screen (Section 11.10 on page
screen (Section 11.11 on page
screen (Section 11.12 on page
NBG6515 User's Guide
88) to allow WiFi advanced features, such as intra-
89) to set priority levels to services, such as e-mail, VoIP,
90) to quickly set up a WiFi network with strong security,
91) to add a WiFi device using WPS.
92) to set the times your wireless LAN is turned on
93) to configure multiple BSSs on the NBG.
2
; for example, 00A0C5000002 or 00:A0:C5:00:00:02. To get
80
1
A MAC address is usually