User guide

51
Encrypting Wireless LAN Transmissions
To prevent unauthorized viewing of data transmitted over your WLAN, you must encrypt
your wireless transmissions. Choose one of the following:
Encrypting Wireless LAN Transmissions
Configure on the
CH6640E/CG6640E Required on Each Wireless Client
if all of your wireless clients
support Wi-Fi Protected Access
(WPA), recommending configuring
WPA on the CH6640E/CG6640E
If you use a local pre-shared key (WPA-PSK)
passphrase, you must configure the identical
passphrase on the CH6640E/CG6640E and on each
wireless client. Home and small-office settings typically
use a local passphrase.
Otherwise, configure WEP on the
CH6640E/CG6640E
You must configure the identical WEP key on the
CH6640E/CG6640E and on each wireless client.
If all of your wireless clients support WPA encryption, recommending using WPA instead
of WEP because WPA:
• Provides much stronger encryption and is more secure
• Provides authentication to ensure that only authorized users can log in to your WLAN
• Is much easier to configure
• Uses a standard algorithm on all compliant products to generate a key from a textual
passphrase
• Will be incorporated into the new IEEE 802.11i wireless networking standard
For new wireless LANs, recommending purchasing client adapters that support WPA
encryption.