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7.2
Network Address Translation (NAT)
7.2.1
Port Forwarding
Port Forwarding allows you to direct incoming traffic from the Internet side (identified by Protocol and External
port) to the internal server with a 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 of 32 entries can be configured.
To add a Virtual Server, click the Add button. The following screen will display.
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Options
Description
Select a Service
Or
Custom Server
User should select the service from the list.
Or
Create a customer server and enter a name for the server
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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7.2.2
Port Triggering
Some applications require specific ports in the Router’s firewall to be open for access by remote parties.
Port Triggering 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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Options
Description
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
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
TCP, TCP/UDP or UDP.
7.2.3
Demilitarized (DMZ) Host
Your Router will forward IP packets from the Wireless Area Network (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
Apply
to activate the DMZ host.
Clear the IP address field and click
Apply
to deactivate the DMZ host.
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7.3
Security
Your Router can be secured with
IP Filtering
or
Parental Control
functions.
7.3.1
IP Filtering
The IP Filtering screen sets filter rules that limit incoming and outgoing
IP traffic.
Multiple filter rules can be
set with at least one limiting condition.
All conditions must be fulfilled when individual IP packets pass filter.
Outgoing IP Filter
The default setting for Outgoing traffic is
ACCEPTED
.
Under this condition, all outgoing IP packets that match
the filter rules will be
BLOCKED
.
To add a filtering rule, click the
Add
button. The following screen will display.
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