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WAN Mode
The WAN mode page allows you to configure how your router uses your external Internet connections; for example your Broadband port or dial-up modem connection.
NAT is a technique which allows several computers on a LAN to share an Internet connection. The computers on the LAN use a "private" IP address range while the WAN port on the router is configured with a single "public" IP address.
Along with connection sharing, NAT also hides internal IP addresses from the computers on the Internet.
NAT (Network Address Translation)
Select NAT if your ISP has assigned only one IP address to you. The computers that connect through the router will need to be assigned IP addresses from a private subnet (example: 192.168.1.0). If your ISP has assigned an IP address for each of the computers that you use, select Classic Routing.
Note: The router will delete all inbound firewall rules when switching between NAT and Classic Routing.
Port Mode
The Port Mode settings allow you to configure whether the router should use only one WAN port or both.
If you are connected to only one ISP, then select Use single WAN port and select either Broadband or Dial-up.
If you have two ISP links for Internet connectivity, the router can be configured in Auto Rollover Mode.
If you want to use Dial-up as a backup connection then select the Primary Broadband with Dialup as backup option. This will set the router to Auto Rollover Mode and the router will switch to dial-up if the broadband connection fails. Ensure that the dialup settings are configured before enabling this feature. The WAN Failure Detection Method must be configured to notify the router of a link failure.
WAN Failure Detection
When the router is configured in Auto Rollover Mode, it checks the connection of the primary link at regular intervals to detect its status. Link failure is detected using one of the following ways:
v DNS Lookup
v Ping
Select DNS lookup using configured DNS Servers to detect failure of a WAN link, using the DNS servers configured in the Broadband & Dial-up ISP Settings pages.
To use a specific DNS server for detecting WAN failure, select DNS Lookup using this DNS Server and type in the IP address of the DNS server.
To detect a Broadband connection failure by pinging to an IP address, select Ping to this IP Address and enter an IP Address in the fields under this option. Ensure that the destination host is reliable.
The Test Period field tells the router how often it should run the above configured detection method.
To define the number of failures after which the router should roll-over to the next port, specif the number of attempts in the Rollover after box.
Click Apply to save your settings.
Click Reset to revert to the previous settings.
 

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