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ZyWALL 5/35/70 Series User’s Guide
385 Chapter 22 Network Address Translation (NAT)
4 The ZyWALL forwards the traffic to Jane’s computer IP address.
5 Only Jane can connect to the Real Audio server until the connection is closed or times
out. The ZyWALL times out in three minutes with UDP (User Datagram Protocol) or two
hours with TCP/IP (Transfer Control Protocol/Internet Protocol).
To change your ZyWALL’s trigger port settings, click ADVANCED, NAT and the Port
Triggering tab. The screen appears as shown. Not all fields are available on all models.
Figure 187 Port Triggering
The following table describes the labels in this screen.
Table 131 Port Triggering
LABEL DESCRIPTION
WAN
Interface
Select the WAN port for which you want to view or configure address mapping rules.
# 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 ZyWALL 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.