Siemens sl2_141 - Manual (Page 105)

Chapter 5:Connection Mode
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For WPA-2 (Wi-Fi Protected Access)/For Mixed WPA2/WPA
WiFi-Protected Access:
The WPA2 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.
WPA2 Pre-authentication:
The wireless client that has associated with
an AP (A) can do the authentication with
another AP (B) in advance. If the client
roams to AP(B), it can associate with AP(B)
quickly. Please click Enabled to inactivate
this function.
Network Re-auth Interval:
When a wireless client has associated with
the number greater than the setting here, it
would be disconnected and the
authentication will be executed again. The
default value is 36000.
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