ZyXEL Communications NBG-417N - Manual (Page 127)

Chapter 11 Network Address Translation (NAT)
NBG-417N User’s Guide
127
The following table describes the labels in this screen.
11.5.1 Trigger Port Forwarding Example
The following is an example of trigger port forwarding.
Figure 73 Trigger Port Forwarding Process: Example
1 Jane requests a file from the Real Audio server (port 7070).
Table 48 Network > NAT > Advanced
LABEL DESCRIPTION
# This is the rule index number (read-only).
Name Type a unique name (up to 15 characters) for identification purposes.
All characters are permitted - including spaces.
Incoming Incoming is a port (or a range of ports) that a server on the WAN uses
when it sends out a particular service. The NBG-417N forwards the
traffic with this port (or range of ports) to the client computer on the
LAN that requested the service.
Start Port Type a port number or the starting port number in a range of port
numbers.
End Port Type a port number or the ending port number in a range of port
numbers.
Trigger The trigger port is a port (or a range of ports) that causes (or triggers)
the NBG-417N to record the IP address of the LAN computer that sent
the traffic to a server on the WAN.
Start Port Type a port number or the starting port number in a range of port
numbers.
End Port Type a port number or the ending port number in a range of port
numbers.
Apply Click Apply to save your changes back to the NBG-417N.
Reset Click Reset to begin configuring this screen afresh.