ZyXEL Communications NBG-418N v2 User Manual

 Chapter 10 Network Address Translation

NBG-418N v2 User’s Guide

To change your NBG-418N v2’s port trigger settings, click Network > NAT > Port Triggering. 
The screen appears as shown.

Note: Only one LAN computer can use a port trigger (range) at a time.

Network > NAT > Port Triggering 

The following table describes the labels in this screen. 

Network > NAT > Port Triggering

Port Triggering 
Status

Click Enable radio button to enable NAT Port Trigger or Disable to inactivate it.

Apply

Click Apply button to apply the NAT Port Trigger status you choose above.

Add Application Rule

User-defined 
Application Name

Type a unique name (up to 15 characters) for identification purposes. All characters are 
permitted - including spaces.

Start Match Port

Start match Port is the starting port in a range of port numbers that a server on the 
WAN uses when it sends out a particular service. The NBG-418N v2 forwards the traffic 
with this starting port to the client computer on the LAN that requested the service. 

End Match 

Port

End match Port is the ending port in a range of port numbers that a server on the WAN 
uses when it sends out a particular service. The NBG-418N v2 forwards the traffic with 
this ending port to the client computer on the LAN that requested the service. 

Trigger Protocol

The trigger protocol is the protocol (UDP, TCP or UDP/TCP) that causes (or triggers) the 
NBG-418N v2 to record the IP address of the LAN computer that sent the traffic to a 
server on the WAN.