ZyXEL Communications P-793H User Manual

 Chapter 7 Network Address Translation (NAT) Screens

P-793H User’s Guide

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If you do not assign a Default Server IP address, the ZyXEL Device discards 
all packets received for ports that are not specified here or in the remote 
management setup.

Click Network > NAT > Port Forwarding to open the following screen. 
See 

 for port numbers commonly used for particular services.

Figure 48   NAT > Port Forwarding

The following table describes the fields in this screen. 

Table 32   NAT > Port Forwarding

Default Server 

Setup

Default Server

In addition to the servers for specified services, NAT supports a default server. A 

default server receives packets from ports that are not specified in this screen. If 

you do not assign a Default Server IP address, the ZyXEL Device discards all 

packets received for ports that are not specified here or in the remote 

management setup.

Port Forwarding

Service Name

Select a service from the drop-down list box or select User define to go to the 

Rule Setup screen and define your own service and its forwarding actions.

Server IP 

Address

Enter the IP address of the server for the specified service.

Add

Click this button to add a rule to the table below.

#

This is the rule index number (read-only).

Active

Click this check box to enable the rule.

Service Name

This is a service’s name.

Start Port 

This is the first port number that identifies a service.

End Port 

This is the last port number that identifies a service.

Server IP 

Address

This is the server’s IP address.