THOMSON 716 User Manual page 112

Chapter 5
SpeedTouch™ Web Interface
WPA-PSK
Access control on the
SpeedTouch™
Registering new
wireless clients
104
The SpeedTouch™ supports WPA-PSK which has three improvements regarding to
WEP:
Authentication via a 4-way handshake to check whether the Pre-Shared Keys
(PSKs) are the same.
Stronger encryption types:
Temporal Key Integrity Protocol (TKIP) (default): Instead of using a
fixed WEP key, TKIP uses in pairs temporary session keys which are
derived from the PSK during the 4-way handshake. For each packet
it uses a different key. TKIP also provides a message integrity check
(MIC) and a rekeying mechanism (in seconds).
Advanced Encryption Standard (AES): State-of-the-art encryption;
can only be used if all wireless devices in your WLAN support AES.
Message Integrity Check (MIC). Which is a strong mathematical function in
which the recipient and transmitter each compute and compare the MIC. If
they don't match it is assumed that a third person has been trying to read the
data.
To enable WPA-PSK:
Select Use WPA-PSK Encryption.
1
In the WPA-PSK Encryption Key box, type a passphrase (aka Pre-shared key)
2
of your choice. The passphrase must consist of 8 to 63 ASCII characters or 64
HEX digits.
In the Encryption list, click select the desired Encryption method (either TKIP
3
or AES).
AES is not yet implemented in most clients but AES is implemented in
the SpeedTouch™ because it will be the future security standard.
Optionally, select the rekeying interval.
4
Click Apply to immediately apply your changes.
5
Configure your wireless client(s) with the same settings.
6
Following modes are available:
New stations are allowed (automatically):
All New stations can access the SpeedTouch™ WLAN.
New stations are allowed (via registration):
Only allowed stations in the Access Control List (ACL) have access. You can
add new stations via registration.
For more information, see
New stations are not allowed:
Only allowed stations in the Access Control List (ACL) have access.
Proceed as follows:
On the Home Network menu, click Devices.
1
Under Pick a task..., click Search for wireless devices.
2
The SpeedTouch™ searches for new wireless stations that use the encryption
3
key of the SpeedTouch™ Access Point.
The SpeedTouch™ takes you to the Home Network. The new station will be
4
" Registering new wireless clients" on page 104
E-DOC-CTC-20050803-0002 v2.0