When you configure an SSID for your AP device, you can optionally enable station isolation. The station isolation setting enables you to control whether wireless clients can communicate directly to each other through the AP device. Station isolation prevents direct traffic between wireless clients that connect to the same SSID on the same radio. Station isolation does not prevent direct traffic between wireless clients that connect to the SSID on different AP devices, or between wireless clients that connect to different radios on an AP200 device.
We recommend that you enable station isolation for SSIDs on AP devices that provide a wireless guest network for wireless clients that do not trust each other.
To enable station isolation on an AP device, select the Enable station isolation check box in the SSID settings.
For more information, see Configure WatchGuard AP Device SSIDs.
When station isolation is enabled on a single AP device that uses the same SSID as another AP device, traffic can still pass between wireless clients that are connected to other AP devices. To effectively implement station isolation for an SSID that is used by more than one AP device, you must also make sure that all traffic between your AP devices goes through the XTM device. The XTM device can then apply policies that support your station isolation settings to the traffic.
To implement station isolation for more than one AP device, you must:
Because the default packet handling policy automatically denies traffic between AP devices on two different interfaces, you do not have to create a policy to explicitly deny that traffic. For example, if you configure a VLAN in the Optional security zone, the XTM device automatically denies packets between the two interfaces as unhandled packets because they do not match any of the configured firewall policies. To prevent traffic between AP devices, make sure that you do not add a policy that allows traffic from Optional to Optional.
You can also enable VLAN tagging in the SSID and configure the VLAN interfaces to manage tagged traffic, but VLAN tagging is not required for station isolation. If you enable VLAN tagging, you must configure two VLANs: one for tagged SSID traffic and one for untagged management traffic. Or, you can enable one VLAN and configure the AP to enable management VLAN tagging for that VLAN in the AP device configuration.
For more information, see Configure VLANs for WatchGuard AP Devices.
This example shows how to implement station isolation for a wireless guest network with two AP100 devices that use the same SSID.
First, configure the VLAN interfaces and VLANs for your AP devices.
For more information about how to configure a VLAN, see Define a New VLAN.
Next, enable station isolation in the SSID settings.
Because the AP-Guest VLAN in this example is an untagged VLAN, you do not have to enable VLAN tagging in the SSID settings.
For more information about SSID configuration, see Configure WatchGuard AP Device SSIDs.
After you configure the VLAN interfaces and SSID settings:
For more information about discovery and pairing, see WatchGuard AP Device Discovery and Pairing.
This configuration example prevents direct wireless traffic between wireless clients that connect to the AP100-Guest SSID. The two main components of this configuration are:
This example shows how to configure station isolation for two AP devices. To add a third AP device, configure another VLAN interface to handle untagged VLAN traffic for the defined VLAN. Then, connect the AP device to that VLAN interface and configure it to use the defined SSID.
Configure WatchGuard AP Device SSIDs