Network settings

The following settings are made in LANconfig in Wireless LAN > General > Logical WLAN settings > Network.

WLAN network enabled

This switch enables or disables the corresponding logical WLAN.

Network name (SSID)

Specify a unique SSID (the network name) for each of the required logical wireless LANs. Only network cards that have the same SSID can register with this wireless network.

Suppress SSID broadcast

You can operate your wireless LAN either in public or private mode. A wireless LAN in public mode can be contacted by any mobile station in the area. Your wireless LAN is put into private mode by activating the closed network function. In this operation mode, mobile stations that do not know the network name (SSID) are excluded from taking part in the wireless LAN. With the closed-network mode activated, WLAN clients that use an empty SSID or the SSID "ANY" are prevented from associating with your network. The option Suppress SSID broadcast provides the following settings:

No: The AP publishes the SSID of the cell. When a client sends a probe request with an empty or incorrect SSID, the AP responds with the SSID of the radio cell (public WLAN).
Yes: The AP does not publish the SSID of the cell. When a client sends a probe request with an empty SSID, the AP similarly responds with an empty SSID.
Tightened: The AP does not publish the SSID of the cell. When a client sends a probe request with a blank or incorrect SSID, the AP does not respond.

Wichtig: Simply suppressing the SSID broadcast does not provide adequate protection: When legitimate WLAN clients associate with the AP, this transmits the SSID in cleartext so that it is briefly visible to all clients in the WLAN network.

MAC filter enabled

The MAC addresses of the clients that are allowed to associate with an AP are stored in the MAC filter list (Wireless LAN > Stations > Stations). The MAC filter enabled switch allows you to switch off the use of the MAC filter list for individual logical networks.

Anmerkung: Use of the MAC filter list is required for logical networks in which the clients register via LEPS with an individual passphrase. The passphrase used by LEPS is also entered into the MAC filter list. The AP always consults the MAC filter list for registrations with an individual passphrase, even if this option is deactivated here.

Maximum count of clients

Here you set the maximum number of clients that may associate with this AP. Additional clients wanting to associate will be rejected by the AP.

Minimum client signal strength

This value sets the threshold value in percent for the minimum signal strength for clients when logging on. If the client's signal strength is below this value, the AP stops sending probe responses and discards the client's requests. A client with poor signal strength will not detect the AP and cannot associate with it. This ensures that the client has an optimized list of available APs, as those offering only a weak connection at the client's current position are not listed.

Client bridge support

Enable this option for an AP if you have enabled the client-bridge support for a client station in WLAN client mode.

Anmerkung: The client-bridge mode only operates between two LANCOM devices.

TX bandwidth limit

With this setting, you define the overall bandwidth that is available for transmission within this SSID (limit in kbps). A value of 0 disables the limit.

RX bandwidth limit

With this setting, you define the overall bandwidth that is available in the reception direction within this SSID (limit in kbps). A value of 0 disables the limit.

Client TX bandwidth limit

Here, you set the transmit-direction bandwidth limit (in kbps) available to each wireless client on this SSID. A value of 0 disables the limit.

Client RX bandwidth limit

Here, you set the receive-direction bandwidth limit (in kbps) available to each wireless client on this SSID. A value of 0 disables the limit.

RADIUS accounting activated

Enable this option to switch on RADIUS accounting for this SSID.

RADIUS accounting server

Enter a RADIUS accounting server for the respective SSID. The servers that can be selected here are specified in the table under Wireless-LAN > Stations > RADIUS-Accounting-Server.

Accounting-Start-Condition

Normally, the WLAN stack sends a RADIUS "accounting start" message as soon as the WLAN client is connected. Often the WLAN client has no IP address at this time, most likely because one has not yet been issued by the DHCP server. Consequently the Framed-IP-Address attribute in the RADIUS accounting message may lack meaningful content.

Connected: Accounting starts when the WLAN client takes on the status "Connected". This is the default setting.
Valid IP address: Accounting starts when the WLAN client receives a valid IP address (IPv4 or IPv6).
Valid IPv4 address: Accounting starts when the WLAN client receives a valid IPv4 address.
Valid IPv6 address: Accounting starts when the WLAN client receives a valid IPv6 address.

Anmerkung: APIPA addresses (169.254.1.0 – 169.254.254.255 and fe80:) are not recognized as valid IP addresses.

Enable LBS tracking

This option specifies whether the LBS server is permitted to track the client information.

Anmerkung: This option configures the tracking of all clients in an SSID. In the Public Spot module you determine whether the LBS server is allowed to track the users who are logged on to the Public Spot.

LBS tracking list

With this entry, you set the list name for the LBS tracking. When a client successfully associates with this SSID, the AP transfers the specified list name, the MAC address of the client, and its own MAC address to the LBS server.

Allow traffic between stations of this SSID

Check this option if all stations logged on to this SSID may communicate with one another.

(U)APSD / WMM Power Save activated

Enable this option to signal stations that the power saving function (U)APSD ([Unscheduled] Automatic Power Save Delivery) is supported. (U)APSD is established in the 802.11e standard, and helps VoWLAN devices to increase their battery life. The related devices switch to power saving mode after login on a (U)APSD-capable AP. If the AP receives data packets for the related devices thereafter, it temporarily stores the data and waits until the VoWLAN device is available again. It then forwards the data. Afterwards, (U)APSD increases the latency time of the radio module, whereby it ultimately consumes less power. The individual rest periods may be so short that a VoWLAN device can still use the power saving function in the call state itself. However, the relevant devices must also support (U)APSD. WWM (Wi-Fi Multimedia) Power Save is a power saving function of the Wi-Fi Alliance and is based on U-APSD. Certain LANCOM APs are WMM® Power Save CERTIFIED by the Wi-Fi Alliance.

Only transmit unicasts, suppress broadcast and multicasts

Multicast and broadcast transmissions within a WLAN cell cause a load on the bandwidth of the cell, especially since the WLAN clients often do not know how to handle these transmissions. The AP already intercepts a large part of the multicast and broadcast transmissions in the cell with ARP spoofing. With the restriction to unicast transmissions it filters out unnecessary IPv4 broadcasts from the requests, such as Bonjour or NetBIOS. The suppression of multicast and broadcast transmissions is also a requirement from the HotSpot 2.0 specification.