ZyXEL Communications Corporation P873HNUP51B Manuel D’Utilisation

 Chapter 11 Network Address Translation (NAT)

P-873HNUP-51B User’s Guide

The following table describes the labels in this screen. 

In addition to the servers for specified services, NAT supports a default server IP address. A default 
server receives packets from ports that are not specified in the NAT Port Forwarding Setup
screen.

Figure 67   Network Settings > NAT > DMZ 

Table 48   Port Triggering: Configuration Add/Edit

Active

Select the check box to enable this rule.

This field is read-only in the Port Triggering Configuration screen.

Service Name

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

This field is read-only in the Port Triggering Edit screen.

WAN Interface

Select a WAN interface for which you want to configure port triggering rules.

Trigger Start Port

The trigger port is a port (or a range of ports) that causes (or triggers) the ZyXEL 
Device to record the IP address of the LAN computer that sent the traffic to a 
server on the WAN.

Type a port number or the starting port number in a range of port numbers.

Trigger End Port 

Type a port number or the ending port number in a range of port numbers.

Trigger Protocol

Select the transport layer protocol from TCP, UDP, or TCP/UDP.

Open Start Port

The open port is a port (or a range of ports) that a server on the WAN uses when 
it sends out a particular service. The ZyXEL Device forwards the traffic with this 
port (or range of ports) to the client computer on the LAN that requested the 
service. 

Type a port number or the starting port number in a range of port numbers.

Open End Port 

Type a port number or the ending port number in a range of port numbers.

Open Protocol

Select the transport layer protocol from TCP, UDP, or TCP/UDP.

Apply

Click Apply to save your changes.

Cancel

Click Cancel to exit this screen without saving.