ZyXEL Communications VMG5313-B10A/ VMG5313-B30A Benutzerhandbuch

Chapter 11 Network Address Translation (NAT)

VMG5313-B10A/-B30A Series User’s Guide

Network Setting > NAT > Port Triggering 

The following table describes the labels in this screen. 

This screen lets you create new port triggering rules. Click Add new rule in the Port Triggering 
screen or click a rule’s Edit icon to open the following screen.

Network Setting > NAT > Port Triggering

Add new rule

Click this to create a new rule.

#

This is the index number of the entry.

Status

This field displays whether the port triggering rule is active or not. A yellow bulb signifies 
that this rule is active. A gray bulb signifies that this rule is not active.

Service Name

This field displays the name of the service used by this rule.

WAN Interface

This field shows the WAN interface through which the service is forwarded.

Trigger Start 
Port

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

This is the first port number that identifies a service.

Trigger End 
Port

This is the last port number that identifies a service.

Trigger Proto.

This is the trigger transport layer protocol. 

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 VMG forwards the traffic with this port (or range of ports) to the 
client computer on the LAN that requested the service. 

This is the first port number that identifies a service.

Open End Port

This is the last port number that identifies a service.

Open Proto.

This is the open transport layer protocol.

Modify

Click the Edit icon to edit this rule.

Click the Delete icon to delete an existing rule.