ZyXEL Communications EMG5324-D10A User Manual

Chapter 10 Network Address Translation (NAT)

EMG5324-D10A User’s Guide

This screen lets you create or edit a port forwarding rule. Click Add new rule in the Port 
Forwarding screen or the Edit icon next to an existing rule to open the following screen.

Port Forwarding: Add/Edit 

The following table describes the labels in this screen. 

Port Forwarding: Add/Edit

Enable

This is available only in the Edit screen. 

Clear the check box to disable the rule. Select the check box to enable it.

Service Name

Enter a name to identify this rule using keyboard characters (A-Z, a-z, 1-2 and so on). 

WAN Interface

Select the WAN interface through which the service is forwarded.

You must have already configured a WAN connection with NAT enabled.

Start Port

Enter the original destination port for the packets.

To forward only one port, enter the port number again in the External End Port field. 

To forward a series of ports, enter the start port number here and the end port number in 
the External End Port field.

End Port 

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.

Translation 
Start Port

This shows the port number to which you want the Device 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.

Translation End 
Port 

This shows the last port of the translated port range.

Server IP 
Address

Enter the inside IP address of the virtual server here.

Protocol Type

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

Apply

Click Apply to save your changes.

Back

Click Back to return to the previous screen without saving.