WESM zl Management and Configuration Guide WT.01.XX and greater

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Wireless Local Area Networks (WLANs)
Configuring a WLAN
You will learn how to configure other advanced settings, which deal with QoS
capabilities, in “Traffic Management (QoS)” on page 4-89.
Controlling Inter-Station Traffic
Often, a wireless network serves simply to connect mobile users to your
Ethernet network or to the Internet. In this case, wireless stations primarily
need to communicate with the Wireless Edge Services zl Module and servers
in the wired network; they do not need to communicate with other wireless
stations. However, by default they are allowed to do so (albeit through their
RPs since infrastructure mode requires that wireless stations send all traffic
to the RP).
For increased security, you can prevent two wireless stations in a particular
WLAN from communicating with each other. You have three options for
controlling wireless station-to-station traffic in a particular WLAN:
■ allow all inter-station traffic
When a wireless station attempts to communicate with another station in
the WLAN, the Wireless Edge Services zl Module forwards the packet
toward the second station’s RP.
■ drop all inter-station traffic
When a wireless station attempts to communicate with another station in
the WLAN, the Wireless Edge Services zl Module drops the packet.
■ forward inter-station traffic through the switch
This option allows inter-station traffic but ensures that it complies with
your network policies. When a wireless station attempts to communicate
with another station in the WLAN, the Wireless Edge Services zl Module
forwards the traffic into the wired network in the VLAN configured for
that WLAN (or in the user’s dynamic VLAN). The wireless services-
enabled switch enforces any applicable access controls and sends the
packet back to the module to be forwarded to toward the second
station’s RP.
To enable inter-station blocking on a WLAN, complete these steps:
1. Access the Edit screen for the WLAN:
a. Select Network Setup > WLAN Setup and click the Configuration tab.
b. Select the WLAN and click the Edit button. The Edit screen is displayed.