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Wireless Broadband Router
A02-RB-W54 Pag. 73
bits in the chip are damaged during transmission, statistical
techniques embedded in the radio can recover the original
data without the need for retransmission. To an unintended
receiver, DSSS appears as low power wideband noise and is
rejected (ignored) by most narrowband receivers.
Question
Would the information be intercepted while transmitting on
air?
Answer
WLAN features two-fold protection in security. On the
hardware side, as with Direct Sequence Spread Spectrum
technology, it has the inherent security feature of scrambling.
On the software side, WLAN offers the encryption function
(WEP) to enhance security and access control.
Question
What is WEP?
Answer
WEP is Wired Equivalent Privacy, a
data privacy mechanism
based on a 64-bit or 128-bit shared key algorithm, as
described in the IEEE 802.11 standard.
Question
What is WPA?
Answer
Attempting IEEE802.11i standard, Wi-Fi Alliance has chosen
from preliminary version a group of specifications called WPA
(Wi-Fi Protected Access).
Specifications of WPA are:
• TKIP Integration (Temporal Key Integrity Protocol) to
allow key change dinamically and integrity control of
packets.
• Advanced mechanism to manage authentication and
access control to network services in centralized
mode (802.11x through EAP, TLS use is necessary)
• Authentication key is different to key used for
encryption
This protocol is more strong that WEP encryption.
Question
What is WPA2?
Answer
Recently approved by Wi-Fi Alliance, the new standard WPA2
is an evolution of WPA (Wi-Fi Protected Access), supported
by almost compatible IEEE802.11g clients.
WPA standard, required to repair WEP weakness, has only a