ZyXEL nbg-5715 Guia Do Utilizador

 Chapter 14 NAT

NBG5715 User’s Guide

Refer to 

 for port numbers commonly used for particular services.

Network > NAT > Port Forwarding 

The following table describes the labels in this screen.

Network > 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 the Port 
Forwarding screen. You can decide whether you want to use the default server 
or specify a server manually.

Select this to use the default server. 

Change to Server

Select this and manually enter the server’s IP address.

Port Forwarding

Service Name

Select a pre-defined service from the drop-down list box. The pre-defined 
service port number(s) and protocol will be displayed in the Port Forwarding 
Summary section.

Otherwise, select User define to manually enter the port number(s) and select 
the IP protocol.

Service Protocol

Select the transport layer protocol supported by this virtual server. Choices are 
TCP, UDP, or TCP&UDP. 

If you have chosen a pre-defined service in the Service Name field, the protocol 
will be configured automatically.

Server IP Address Enter the inside IP address of the virtual server here and click Add to add it in 

the Port Forwarding Summary section.

Port Forwarding Summary

#

This is the number of an individual port forwarding server entry.

Status

This icon is turned on when the rule is enabled. 

Name

This field displays a name to identify this rule.

Protocol

This is the transport layer protocol used for the service.

Port

This field displays the port number(s). 

Server IP Address This field displays the inside IP address of the server.

Modify

Click the Edit icon to open the edit screen where you can modify an existing 
rule. 

Click the Remove icon to delete a rule.