ZyWALL 5/35/70 Series User’s Guide

4The ZyWALL forwards the traffic to Jane’s computer IP address.

5Only 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

 

Select the WAN port for which you want to view or configure address mapping rules.

Interface

 

 

#

 

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.

 

 

 

389

Chapter 22 Network Address Translation (NAT)