Filter
Top Products
Network > Interfaces
243
SonicOS 5.8.1 Administrator Guide
3. Under the Expert Mode Settings heading, select the Use Routed Mode - Add NAT Policy
to prevent outbound\inbound translation checkbox to enable Routed Mode for the
interface.
4. In the Set NAT Policy's outbound\inbound interface to pulldown menu, select the WAN
interface that is to be used to route traffic for the interface.
5. Click OK.
The firewall then creates two “No-NAT” policies for both the configured interface and the
selected
WAN interface. These policies override any more general Many to One NAT policies
that may be configured for the interfaces.
Configuring the U0 External 3G/Modem Interface
The SonicWALL TZ 200 security appliances support an external 3G/mobile or analog modem
interface. This interface is listed at the bottom of the Interface Settings table as the U0
interface. A number of the settings for the external interface can be configured from the
Network > Interfaces page, but it can be more thoroughly configured using the pages on the
3G or Modem tab in the left-side navigation bar.
For complete information on configuring a 3G or analog modem external interface, see “3G/
Modem” on page 431.
Specifying the WAN Connection Model
Note The WAN Connection Model drop-down menu is only displayed when the U0 interface is
configured for a 3G/mobile external interface. This menu item is not displayed when the U0
interface is configured for an analog modem.
To configure the WAN connection model, navigate to the Network > Interfaces page and
select one of the following options in the WAN Connection Model drop-down menu:
• 3G only - The WAN interface is disabled and the 3G interface is used exclusively.
• Ethernet only - The 3G interface is disabled and the WAN interface is used exclusively.
• Ethernet with 3G Failover - The WAN interface is used as the primary interface and the
3G interface is disabled. If the WAN connection fails, the 3G interface is enabled and a 3G
connection is automatically initiated.
For a detailed explanation of the behavior of the Ethernet with 3G Failover setting see
“Understanding 3G Connection Models” on page 434.