ZyXEL Communications AMG1202-T10A, User Manual

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Chapter 9 Network Address Translation (NAT)
AMG1202-T10A User’s Guide
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The following table describes the fields in this screen.
9.4 The Address Mapping Screen
Note: The Address Mapping screen is available only when you select Full Feature in
the NAT > General screen.
Ordering your rules is important because the ZyXEL Device applies the rules in the order that you
specify. When a rule matches the current packet, the ZyXEL Device takes the corresponding action
and the remaining rules are ignored. If there are any empty rules before your new configured rule,
your configured rule will be pushed up by that number of empty rules. For example, if you have
already configured rules 1 to 6 in your current set and now you configure rule number 9. In the set
summary screen, the new rule will be rule 7, not 9. Now if you delete rule 4, rules 5 to 7 will be
pushed up by 1 rule, so old rules 5, 6 and 7 become new rules 4, 5 and 6.
Table 43
Network > NAT > Port Forwarding: Edit
LABEL DESCRIPTION
Rule Setup
Active Click this check box to enable the rule.
Service Name Enter a name to identify this port-forwarding rule.
Start Port Enter a port number in this field.
To forward only one port, enter the port number again in the End Port field.
To forward a series of ports, enter the start port number here and the end port
number in the
End Port field.
End Port Enter a port number in this field.
To forward only one port, enter the port number again in the 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
Start Port field above.
Server IP
Address Enter the inside IP address of the server here.
Port Translation
Start / End Port Enter the start port number here to which you want the device to translate the
incoming port. For a range of ports, you only need to enter the first number of the
range to which you want the incoming ports translated, the device automatically
calculates the last port of the translated port range.
Back Click this to return to the previous screen without saving.
Apply Click this to save your changes.
Cancel Click this to restore your previously saved settings.