B&B Electronics WLNN-AN(ER,SE,SP.EK)-DP551 - Manual - Manual (Page 42)

42 Airborne Enterprise CLI Reference Manual
9.0 Ethernet Bridge Use
The Airborne Ethernet Adapter is a fully functional NAT Level 3 router, supporting a
public IP address for the wireless interface and a private network for the attached devices
on the wired interface.
Network Address Translation (NAT) is the process of modifying network address
information in Internet Protocol (IP) packet headers while in transit across a traffic routing
device for the purpose of remapping a given address space into another. In the case of a
NAT Level 3 device, the modification of the packet headers provides for a translation
between a single public IP address (that of the wireless interface) and the IP addresses
of the devices on the private network (wired Ethernet interface).
The modules wireless interface is considered the public address and will be the point of
contact on the target network (see Figure 5). This interface supports all the wireless and
network authentication requirements, including support for WPA2-Enterprise. It can
acquire an IP address either through DHCP or user configured static IP. Once
configured, association and authentication are handled entirely by the module and
require no interaction from an Ethernet client on the private network.
Figure 5 - Ethernet Bridge Functionality