What Is Wpa-Psk; What Is The Difference Between 40-Bit And 64-Bit Wep; What Is A Wep Key; Will 128-Bit Wep Communicate With 64-Bit Wep - ZyXEL Communications P-661HNU-Fx Support Notes

P-661HNU Series Support Notes
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. Note, WEP has shown to have
fundamental flaws in its key generation processing.

3. What is WPA-PSK?

WPA-PSK (Wi-Fi Protected Access Pre-Shared Key) can be used if user do
not have a Radius server but still want to benefit from it. Because WPA-PSK
only requires a single password to be entered on wireless AP/gateway and
wireless client. As long as the passwords match, a client will be granted
access to the WLAN.

4. What is the difference between 40-bit and 64-bit WEP?

40 bit WEP and 64 bit WEP are the same encryption level and can interoperate.
The lower level of WEP encryption uses a 40 bit (10 Hex character) as "secret
key" (set by user), and a 24 bit "Initialization Vector" (not under user control)
(40+24=64). Some vendors refer to this level of WEP as 40 bit, others as 64
bit.

5. What is a WEP key?

A WEP key is a user defined string of characters used to encrypt and decrypt
data.

6. Will 128-bit WEP communicate with 64-bit WEP?

No. 128-bit WEP will not communicate with 64-bit WEP. Although 128 bit WEP
also uses a 24 bit Initialization Vector, but it uses a 104 bit as secret key. Users
need to use the same encryption level in order to make a connection.

7. Can the SSID be encrypted?

No, WEP only encrypts the data packets not the 802.11n 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 802.11n wireless traffic.

8. By turning off the broadcast of SSID, can someone still sniff the SSID?

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