Siemens sl2_141 User Manual

Page 103

Chapter 5:Connection Mode

Authentication Mechanism

For WPA (Wi-Fi Protected Access)

WiFi-Protected Access:
The WPA is suitable for enterprises. It must be
used in conjunction with an authentication
server such as RADIUS to provide centralized
access control and management. It can
provides stronger encryption and
authentication solution than others WPA mode.

Data Encryption (WPA):

Select the data encryption for the WPA mode.
There are three types that you can choose,
TKIP, AES, TKIP+AES.

TKIP takes the original master key only as a
starting point and derives its encryption
keys mathematically from this master key.
Then it regularly changes and rotates the
encryption keys so that the same encryption
key will be never used twice.

AES provides security between client
workstations operating in ad hoc mode. It
uses a mathematical ciphering algorithm
that employs variable key sizes of 128, 192
or 256 bits.

TKIP+AES combines the features and
functions of TKIP and AES.

WPA Group Rekey Interval:
Type in the time for the WPA group rekey
interval. The unit is second.

RADIUS Server IP Address:
RADIUS Server is a protocol for carrying
authentication, authorization, and
configuration information between a Network
Access Server which desires to authenticate its
links and a shared Authentication Server.
Please type in the IP Address for the RADIUS
Server.

RADIUS UDP Port:
Except for the IP address of the RADIUS
Server, you have to enter the port number for
the server. Port 1812 is the reserved
RADIUS-authentication port described in RFC
2138. Earlier RADIUS clients use port 1945.
The default value will be shown on this box.
You can keep and use it.

RADIUS Share Secret:
A share secret is like a password, which is used
between IAS and the specific RADIUS client
to verify identity. Both IAS and the RADIUS
client must be use the same shared secret for
successful communication to occur. Type in
the words for the share secret.

After finished settings, click Apply for
activation.