ZyXEL Communications p-2612HNU-FX Manuel D’Utilisation

 Chapter 8 Network Address Translation (NAT)

P-2612HNU-Fx User’s Guide

addresses and the ISP assigns the WAN IP address. The NAT network appears as a 
single host on the Internet.

Figure 44   Multiple Servers Behind NAT Example

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

 for port numbers commonly used for particular 

services. 

Figure 45   Network > NAT > Port Forwarding

The following table describes the fields in this screen. 

A=192.168.1.33

D=192.168.1.36

C=192.168.1.35

B=192.168.1.34

Table 34   Network > NAT > Port Forwarding

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 display in the External 
port, Internal port and Protocol fields.

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

WAN Interface

Select the WAN interface through which the service is forwarded.

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