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Wireless LAN—Getting Technical
FRITZ!Box 7272 109
The Standard for Security
IEEE 802.11i
The WPA2 security mechanism is defined in the IEEE 802.11i
standard. WPA2 is an extension of the familiar security mech-
anism WPA (Wi-Fi Protected Access).
The main feature of the extension of WPA to WPA2 is the AES-
CCMP encryption process.
FRITZ!Box supports the AES encryption procedure as part of
the WPA2 mechanism, and the TKIP encryption procedure as
part of the WPA mechanism. This means that the FRITZ!Box
can be used in combination with any wireless devices that al-
so support WPA2 with AES or WPA with TKIP.
Frequency Ranges
Wireless LAN uses the frequency ranges at 2.4 GHz and 5 GHz
for transmission.
With the FRITZ!Box 7272 you can establish wireless LAN con-
nections in the 2.4-GHz range.
2.4-GHz Frequency Band
In the 2.4-GHz frequency band wireless LAN works in the
same range as Bluetooth, microwave devices and various
other devices like radio-controlled toys, garage-door openers
and video bridges. This means that interference may occur
within wireless networks operated in the vicinity of such de-
vices. Generally this has adverse effects on the transmission
rate, including aborted connections.
Mechanism Encryption
WPA TKIP (Temporary Key Integrity Protocol)
WPA2 TKIP
AES-CCMP
based on the extremely secure AES (Advanced
Encryption Standard) procedure. CCMP
(Counter Mode with CBC-MAC Protocol) de-
fines how the AES procedure is applied to
wireless LAN packets.
109


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