ZyXEL Communications P-2812HNU-51c User Manual page 161

The following table describes the labels in this screen.
Table 42 NAT Port Forwarding
LABEL
Service Name
WAN Interface
Server IP
Address
External Port
Start
External Port
End
Internal Port
Start
Internal Port
End
Protocol
Add
No.
Active
Server Name
WAN Interface
External Start
Port
External End
Port
P-2812HNU-51c User's Guide
DESCRIPTION
Select a pre-defined service from the drop-down list box. The pre-
defined service port number(s) and protocol will display in the External
port, Internal port and Protocol fields.
Otherwise, select User Define to open the Rule Setup screen where
you can manually enter the port number(s) and select the IP protocol.
Select the WAN interface through which the service is forwarded.
You must have already configured a WAN connection with NAT enabled.
Enter the IP address of the server for the specified service.
Enter the original destination port for the packets.
To forward only one port, enter the port number again in the External
Port End field.
To forward a series of ports, enter the start port number here and the
end port number in the External Port End field.
Enter the last port of the original destination port range.
To forward only one port, enter the port number in the External Port
Start 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 Port Start field above.
Enter the port number to which you want the P-2812HNU-51c to
translate the incoming port.
To forward only one port, enter the port number again in the Internal
Port End field.
For a range of ports, enter the first number of the range to which you
want the incoming ports translated.
Enter the last port of the translated port range.
This is the transport layer protocol used for the service.
Click this button to add a rule to the table below.
This is the rule index number (read-only).
This field indicates whether the rule is active or not.
Clear the check box to disable the rule. Select the check box to enable it.
This field displays the name of the service used by the packets for this
virtual server.
This field displays the WAN interface through which the service is
forwarded.
This is the first external port number that identifies a service.
This is the last external port number that identifies a service.
Chapter 8 Network Address Translation (NAT)
161