Lan Configuration; Private And Public Mode - Sierra Wireless AirLink ES440 User Manual

5: LAN Configuration

Private mode
AirLink device
Rev 1 Nov.14
You can use the AirLink device to route data between one or more
connected devices and the Internet via the mobile network. The
AirLink device has two modes you can use for configuring a LAN—
Private Mode and Public Mode.

Private and Public Mode

Private Mode and Public Mode are Sierra Wireless terms. In Private
Mode, the router or laptop connected to the AirLink device has a LAN
IP address. In Public Mode the AirLink device passes the WAN IP
address to the router or laptop.
configurations.
Internet
WAN IP address
LAN IP address
Router or laptop
Figure 5-1: Private vs. Public Mode
Private Mode
Private Mode uses Network Address Translation (NAT) to enable the
non-routable device to access the Internet. Data from the connected
devices is passed through the AirLink device. By default, the first
connected Ethernet or USBnet host is the DMZ host.
Figure 5-1 shows the two types of
Public mode
Internet
WAN IP address
AirLink device
WAN IP address
Router or laptop
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