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8.2.5
Advanced
The Internet section allows you to configure the
Advanced
settings of the router.
Network Address Translation (NAT)
This page allows you to Enable / Disable the Network Address Translation (NAT) feature. The NAT is required to share one Internet
account with multiple LAN users.
It also is required for certain Firewall features to work properly.
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Port Mapping
Port Mapping allows you to redirect a particular range of ports to a computer on your LAN network. This helps you host servers
behind the NAT and Firewall.
In the example below, there is a Mail Server that requires ports 22 to 23.
When there is a connection from the Internet on those ports, it will be redirected to the Mail Server at IP address
192.168.0.150.
Port Mapping
Enable Port Mapping
Tick this box to Enable the Port Mapping feature.
Description:
Enter a name or description to help you identify this entry.
Local IP:
The local IP address of the computer the server is hosted on.
Protocol:
Select to apply the feature to either TCP, UDP or Both types of packet transmissions.
Port range:
The range of ports that this feature will be applied to.
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Port Forwarding
Port Forwarding allows you to redirect a particular public
port to a computer on your LAN network. This helps
you host servers behind the NAT and Firewall.
In the example below, there is a FTP Server running
on port 21 on the LAN.
For security reasons, the Administrator would like to
provide this server to Internet connection on port 30.
Therefore then there is a connection from the Internet
on port 30, it will be forwarded to the computer with the
Port Forwarding
Enable Port
Forwarding
Tick this box to Enable the Port Forwarding feature.
Description:
Enter a name or description to help you identify this entry.
Local IP:
The local IP address of the computer the server is hosted on.
Protocol:
Select to apply the feature to either TCP, UDP or Both types of packet transmissions.
Local Port:
The port that the server is running on the local computer.
Public Port:
When a connection from the Internet is on this port, then it will be forwarded to the indicated local IP address.
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Port Trigger
If you use Internet applications which use non-standard connections or
port numbers, you may find that they do not function correctly because
they are blocked by the Wireless Router's firewall. Port Trigger will be
required for these applications to work.
Port Trigger
Enable Port Forwarding
Tick this box to Enable the Port Trigger feature.
Popular applications:
This is a list of some common applications with preset settings.
Select the application and click
Add
to automatically enter the settings.
Trigger port:
This is the outgoing (outbound) port numbers for this application.
Trigger type
Select whether the application uses TCP, UDP or Both types of protocols for outbound transmissions.
Public Port
These are the inbound (incoming) ports for this application.
Public type:
Select whether the application uses TCP, UDP or Both types of protocols for inbound transmissions.
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Application Layer Gateway (ALG)
Certain applications may require the use of ALG feature to function correctly. If you use any of the applications listed, please tick and
select it to enable this feature.
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