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6.2 LAN
Configure the ADSL Router IP Address and Subnet Mask for LAN interface.
Save
button only saves the LAN configuration data.
Save/Reboot
button saves the LAN
configuration data and reboots the device to make the new configuration effective.
(Slave) IP Address
: Enter the IP address for the LAN port.
(Slave) Subnet Mask
: Enter the subnet mask for the LAN port.
Enable IGMP Snooping:
Enable /Disable the function that is IGMP Snooping.
Standard Mode:
In standard mode, as in all prior releases, multicast traffic will
flood to all bridge ports when there is no client subscribes to any multicast group –
even when IGMP snooping is enabled.
Blocking Mode:
In blocking mode, the multicast data traffic will be blocked and not
flood to all bridge ports when there are no client subscriptions to any multicast
group.
To configure a secondary IP address for the LAN port, click the box as shown below.
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56
6.3 NAT
To display the NAT function, the NAT option must be enabled in WAN Setup.
6.3.1
Virtual Servers
Virtual Server allows you to direct incoming traffic from WAN side (identified by
Protocol and External port) to the Internal server with private IP address on the LAN
side. The Internal port is required only if the external port needs to be converted to
a different port number used by the server on the LAN side. A maximum 32 entries
can be configured.
To add a Virtual Server, simply click the
Add
button.
The following screen will be displayed.
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57
Select a Service
or
Custom Server
User should select the service from the list.
or
User can enter the name of their choice.
Server IP Address
Enter the IP address for the server.
External Port Start
Enter the starting external port number (when you select
Custom Server). When a service is selected the port ranges
are automatically configured.
External Port End
Enter the ending external port number (when you select
Custom Server). When a service is selected the port ranges
are automatically configured.
Protocol
User can select from: TCP, TCP/UDP or UDP.
Internal Port Start
Enter the internal port starting number (when you select
Custom Server). When a service is selected the port ranges
are automatically configured
Internal Port End
Enter the internal port ending number (when you select
Custom Server). When a service is selected the port ranges
are automatically configured.
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58
6.3.2
Port Triggering
Some applications require that specific ports in the router’s firewall be opened for
access by the remote parties. Port Trigger dynamically opens up the ‘Open Ports’ in
the firewall when an application on the LAN initiates a TCP/UDP connection to a
remote party using the ‘Triggering Ports’. The router allows the remote party from
the WAN side to establish new connections back to the application on the LAN side
using the ‘Open Ports’.
A maximum 32 entries can be configured.
To add a Trigger Port, simply click the
Add
button. The following will be displayed.
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59
6.3.3
DMZ Host
The ADSL router will forward IP packets from the WAN that do not belong to any of
the applications configured in the Virtual Servers table to the DMZ host computer.
Enter the computer’s IP address and click
Save/Apply
to activate the DMZ host.
Clear the IP address field and click
Save/Apply
to deactivate the DMZ host.
Select an Application
Or
Custom Application
User should select the application from the list.
Or
User can enter the name of their choice.
Trigger Port Start
Enter the starting trigger port number (when you select
custom application). When an application is selected the
port ranges are automatically configured.
Trigger Port End
Enter the ending trigger port number (when you select
custom application). When an application is selected the
port ranges are automatically configured.
Trigger Protocol
User can select from: TCP, TCP/UDP or UDP.
Open Port Start
Enter the starting open port number (when you select
custom application). When an application is selected the
port ranges are automatically configured.
Open Port End
Enter the ending open port number (when you select
custom application). When an application is selected the
port ranges are automatically configured.
Open Protocol
User can select from: TCP, TCP/UDP or UDP.

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