Configuration / project engineering
5.5 Security Wizard
SCALANCE W786-xPRO
Operating Instructions, Release 08/2007, C79000-G8976-C221-02
87
Note
Since no encryption is used for the SSID transfer, this function can only provide basic
protection against unauthorized access. The use of an authentication method (for example
WPA (RADIUS) or WPA-PSK if this is not possible) provides higher security. You must also
expect that certain end devices may have problems with access to a hidden SSID.
Enable 'Inter SSID communication' option for WLAN 1
Selecting this option allows communication between WLAN clients registered at different
SSIDs of an access point.
Example 1
A SCALANCE W786-3PRO was defined with different SSIDs.
Example 2
A SCALANCE W788-1PRO is used with multiple SSIDs.
Note
On a SCALANCE W78x-2/3xx, the Inter SSID Communication function must be enabled on
all WLAN interfaces or on all VAPs to allow communication between the clients with different
SSIDs.
Note
If VLANs are configured for the SSIDs, this setting can prevent communication between the
SSIDs according to the VLAN rules.
Enable 'Intracell communication' list box
●
Intracell blocking
This setting prevents WLAN client communication within an SSID.
●
Ethernet blocking
This setting prevents WLAN client communication over the Ethernet interface of the
access point.
●
Disabled
This setting enables both WLAN client communication within an SSID as well as WLAN
client communication over the Ethernet interface.
Overview of the communication options
To illustrate the situation, there is an overview of the effects of the "Inter SSID
communication" and "Intracell communication" settings below.