B&B Electronics WLNN-AN(ER,SE,SP.EK)-DP551 - Manual - Manual (Page 46)

46 Airborne Enterprise CLI Reference Manual
Command Description
eth-mode
The Ethernet interface supports the following configurations; this parameter
determines the default mode of the interface.
auto Auto negotiate
10half 10Mbps, half duplex
10full 10Mbps, full duplex
100half 100Mbps, half duplex
100full 100Mbps, full duplex
It is recommended that auto be used as this will provided the greatest level
of compatibility on the Ethernet interface.
The private network supports the Airborne ™ discovery protocol and will respond
to discovery requests on the private network. Discovery protocol requests are not
forwarded to the public network.

The subnet for the private network IP addresses (Ethernet Client and Gateway) and
public IP address (802.11), obtained by the module via the wireless interface, MUST
NOT be the same.
Failure to observe this requirement will result in unpredictable behavior of the bridge.
When attempting to make an out-bound connection to a device on the public
network, the public network IP address of the device should be used e.g. In
Figure 6 the client with address 192.168.2.100 wants to connect to an FTP
server, with the address of 123.45.67.99, on the public network to perform a
firmware download. The FTP address that would be used in the ftp-server-
address parameter would be 123.45.67.99. Note that this is not within the
subnet of the Ethernet client, however the NAT router will do the necessary
address translations and packet header manipulations to ensure the out-bound
and in-bound connections are maintained.
Any traffic between the Airborne Ethernet Bridge Ethernet interface and Ethernet
client, on the private network, will not be broadcast on to the public network
unless it is directed at the public network.
For most users there will be no modification of the private network settings
needed and if the target Ethernet client uses DHCP to obtain an IP address, no
change in configuration will be required either.
9.3 Ethernet Firewall Configuration
The module has an in-built rule based firewall, designed to provide a simple
solution for limiting access on the network the wireless interface is associated
with to just the resources required for the target application. When configured this
prevents any system using the Ethernet interface for accessing unauthorized
data or resources, protecting the connected network from illegal use by an rogue
Ethernet Client.