The Standard for Security
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Range The range within a WLAN is highly dependent on the fol-
lowing three factors:
the WLAN adapter used,
the structural conditions, and
the amount of radio traffic on the same frequency
band. Other wireless networks may be active, but al-
so what are known as analog interferers (for instance
baby monitors, video bridges, DECT telephones,
Bluetooth transmitters for mobile telephones, and
microwave ovens).
IEEE 802.11b With a maximum throughput rate of 11 Mbit/s, this is the
oldest standard for radio networks in the 2.4-GHz frequen-
cy range (ISM). First-generation WLAN access points, for
example, can use this standard to communicate with the
FRITZ!WLAN USB Stick.
IEEE 802.11g This is currently the most common WLAN standard. It
communicates with a maximum of 54 Mbit/s gross in the
2.4-GHz frequency range (ISM) and guarantees broad
compatibility with many WLAN devices.
802.11g++* The FRITZ!WLAN USB Stick also supports the high-speed
mode 802.11g++*. The transmission rate within a wireless
LAN can be increased with this extension to as high as
125 Mbit/s gross and 35 Mbit/s net when the remote site
is connected to a WLAN access point compatible with this
mode (a FRITZ!Box Fon WLAN 7170 by AVM, for example).
*Does not apply for FRITZ!Box WLAN products with the IEEE 802.11n radio standard.
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 famil-
iar security mechanism WPA (Wi-Fi Protected Access).
The main feature of the extension of WPA to WPA2 is the
AES-CCM encryption process.
The WPA mechanism stipulates the TKIP (Temporary
Key Integrity Protocol) for encryption.
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