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Chapter 9    Network Address Translation (NAT)

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Ordering your rules is important because the Router applies the rules in the order that you specify. 

When a rule matches the current packet, the Router takes the corresponding action and the 

remaining rules are ignored.

This screen is available only when you select NAT Full Feature on in the General screen. To change 

your Router’s address mapping settings, click Network Setting > NAT > Address Mapping.

Network Setting > NAT > Address Mapping

External End Port  Configure this for a user-defined entry. Enter the last port of the original destination 

port range. 
To forward only one port, enter the port number in the External Start Port field above 

and then enter it again in this field. 
To forward a series of ports, enter the last port number in a series that begins with the 

port number in the External Start Port field above.

Server IP Address

Enter the inside IP address of the virtual server here.

Protocol

Select the protocol supported by this virtual server. Choices are TCP, UDP, or TCP/UDP.

Open Start Port

Configure this for a user-defined entry. This shows the port number to which you want 

the Router to translate the incoming port. For a range of ports, enter the first number 

of the range to which you want the incoming ports translated.

Open End Port 

Configure this for a user-defined entry. This shows the last port of the translated port 

range.

Table 44   NAT > Port Forwarding: Add/Edit (continued)

Table 45   Network > NAT > Address Mapping 

Add new rule

Click this to add a new address mapping rule.

Mapping Set

This is the index number of the address mapping set.

Local Start IP

This is the starting Inside Local IP Address (ILA). 

Local End IP

This is the end Inside Local IP Address (ILA). 

Global Start IP

This is the starting Inside Global IP Address (IGA). 

Global End IP

This is the ending Inside Global IP Address (IGA).