Siemens SCALANCE W780 Configuration Manual page 272

Configuring with Web Based Management
5.9 "Security" menu
Description
The table has the following columns:
● Interface
Shows the available interfaces.
● Authentication Type
Select the type of authentication. The selection depends on the operating mode and the
transmission standard.
– Open System
– Shared Key
– WPA (RADIUS)
– WPA-PSK
– WPA2 (RADIUS)
– WPA2-PSK
– WPA/WPA2-Auto-PSK
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There is no authentication. Encryption with a fixed (unchanging) WEP key can be
selected as an option. To use the key, enable "Encryption". You define the WEP key
on the "Keys" page.
If iPCF or iPCF-MC mode is enabled, only the encryption method AES with 128 bit key
length is supported.
In Shared Key authentication, a fixed key is stored on the client and access point. This
WEP key is then used for authentication and encryption. You define the WEP key on
the "Keys" page.
Note
If you use "Open System" with "Encryption" or "Shared Key", Key 1 must always be
set on the "Keys" page.
Wi-Fi Protected Access is a method specified by the Wi-Fi Alliance to close security
gaps in WEP. Authentication using a server is stipulated (802.1x). The dynamic
exchange of keys at each data frame introduces further security.
WPA Pre Shared Key (WPA-PSK) is a weakened form of WPA. In this method,
authentication is not established by a server but is based on a password. This
password is configured manually on the client and server.
WPA2 (Wi-Fi Protected Access 2) is a further development of WPA and implements
the functions of the IEEE 802.11i security standard. WPA authentication works,
however, without the RADIUS server.
WPA2-PSK is based on the 802.11i standard. WPA authentication works, however,
without a RADIUS server. Instead of this, a WPA(2) key (WPA(2) pass phrase) is
stored on each client and access point. The WPA(2) pass phrase is used for
authentication and further encryption.
Setting with which an access point can process both the "WPA-PSK" as well as the
"WPA2-PSK" type of authentication. This is necessary when the access point
communicates with different clients, some using "WPA-PSK" and others "WPA2-PSK".
The same encryption method is set on the clients.
SCALANCE W780/W740 to IEEE 802.11n Web Based Management
Configuration Manual, 03/2015, C79000-G8976-C267-08