Figure 257 Advanced > Nat > Port Triggering; Table 134 Advanced > Nat > Port Triggering - ZyXEL Communications ZYWALL 35 User Manual

Chapter 21 Network Address Translation (NAT)
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).
Click ADVANCED > NAT > Port Triggering to open the following screen. Use this screen
to change your ZyWALL's trigger port settings.
Figure 257 ADVANCED > NAT > Port Triggering
The following table describes the labels in this screen.
Table 134 ADVANCED > NAT > Port Triggering
LABEL
WAN
Interface
#
Name
Incoming
Start Port
End Port
Trigger
Start Port
446
DESCRIPTION
Select the WAN interface for which you want to view or configure address mapping
rules.
This is the rule index number (read-only).
Type a unique name (up to 15 characters) for identification purposes. All characters
are permitted - including spaces.
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.
Type a port number or the starting port number in a range of port numbers.
Type a port number or the ending port number in a range of port numbers.
The trigger port is a port (or a range of ports) that causes (or triggers) the ZyWALL to
record the IP address of the LAN computer that sent the traffic to a server on the WAN.
Type a port number or the starting port number in a range of port numbers.
ZyWALL 5/35/70 Series User's Guide