ZyXEL Communications P-660HW-TX User Manual

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P-660HW-Tx v2 Series Support Notes
 
 
7. Can the SSID be encrypted? 
No, WEP only encrypts the data packets not the 802.11 management 
packets.The SSID is in the beacon and probe management messages and 
SSID goes over the air in clear text. This makes obtaining the SSID easy by 
sniffing 802.11 wireless traffic. 
 
8. 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 see the SSID. 
 
9. What are Insertion Attacks? 
The insertion attacks are based on placing unauthorized devices on the 
wireless network without going through a security process and review. 
 
10. What is Wireless Sniffer?
 
An attacker can sniff and capture legitimate traffic. Many of the sniffer tools for 
Ethernet are based on capturing the first part of the connection session, where 
the data would typically include the username and password. An intruder can 
masquerade as that user by using this captured information. An intruder who 
monitors the wireless network can apply this same attack principle on the 
wireless. 
 
11. What is OTIST? How do I use it? 
OTIST is acronym for
 
ZyXEL’s
 ‘
One Touch Intelligent Security Technology’. 
It enables P-660HW-Tx v2 and ZyXEL’s OTIST supported Wireless adapters 
to establish connections of the WPA-PSK security mode automatically with 
just one touch at the reset button on rear panel. 
To use this function on P-660HW-Tx v2, you could press the reset button on 
P-660HW-Tx v2 for 1~5 seconds, the OTIST is actived. The P-660HW-Tx v2 
will enhance the Wireless Security Level to WPA-PSK automatically if no 
WLAN security has been set. The default setup key for OTIST is ‘01234567’.   
 
 
 
 
                                     
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All contents copyright © 2006 ZyXEL Communications Corporation.