Operating Instructions and Installation Instructions

Wireless LAN—Getting Technical
FRITZ!Box 7490 109
11n, 11a
In your radio network there are wireless LAN devices that are
compatible with one or both of the following standards:
• 802.11n
• 802.11a
Set the wireless LAN standard for the 5-GHz frequency band
to: 802.11n+a
11ac
In your radio network there are wireless devices that support
the 802.11ac standard:
Set the wireless LAN standard for the 5-GHz frequency band
to: 802.11ac
An unused frequency band can be disabled in the FRITZ!Box
in order to reduce energy consumption without losing wire-
less LAN connections.
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.
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.