ZyXEL Communications 2WG User Manual
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ZyWALL 2WG Support Notes
All contents copyright (c) 2006 ZyXEL Communications Corporation.
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2. Building Materials: metal door, aluminum studs.
3. Electrical devices: microwaves, monitors, electric motors.
Solution :
1.Minimizing the number of walls and ceilings
2.Antenna is positioned for best reception
3.Keep WLAN products away from electrical devices, eg: microwaves, monitors, electric motors,…,
etc.
4. Add additional APs if necessary.
H13. What is SSID (Sever Set ID)?
SSID is a configurable identification that allows clients to communicate to the appropriate base station.
With proper configuration, only clients that are configured with the same SSID can communicate with
base stations having the same SSID. SSID from a security point of view acts as a simple single shared
password between base stations and clients.
H14. What is WEP?
Wired Equivalent Privacy. WEP is a security mechanism defined within the 802.11 standard and
designed to make the security of the wireless medium equal to that of a cable (wire). WEP data
encryption was designed to prevent access to the network by "intruders" and to prevent the capture of
wireless LAN traffic through eavesdropping. WEP allows the administrator to define a set of respective
"Keys" for each wireless network user based on a "Key String" passed through the WEP encryption
algorithm. Access is denied by anyone who does not have an assigned key. WEP comes in 40/64-bit
and 128-bit encryption key lengths. Note, WEP has shown to have fundamental flaws in its key
generation processing.
H15. What is a WEP key?
A WEP key is a user defined string of characters used to encrypt and decrypt data.
H16. By turning off the broadcast of SSID, can someone still sniff the SSID?
Many APs by default have broadcasting the SSID turned on. Sniffers typically will find the SSID in the
broadcast beacon packets. Turning off the broadcast of SSID in the beacon message (a common
practice) does not prevent getting the SSID; since the SSID is sent in the clear in the probe message
when a client associates to an AP, a sniffer just has to wait for a valid user to associate to the network to