Chapter 11 Network Address Translation (NAT)
EX5501-B0 / AX7501-B0 / PX7501-B0 User’s Guide
179
Figure 104
Port Triggering: Add/Edit
The following table describes the labels in this screen.
11.4 DMZ Settings
A client in the Demilitarized Zone (DMZ) is no longer behind the Zyxel Device and therefore can run any
Internet applications such as video conferencing and Internet gaming without restrictions. This,
however, may pose a security threat to the Zyxel Device.
Table 61 Port Triggering: Configuration Add/Edit
LABEL
DESCRIPTION
Active
Select
Enable
or
Disable
to activate or deactivate the rule.
Service Name
Enter a name to identify this rule using keyboard characters (A-Z, a-z, 1-2 and so on).
WAN Interface
Select a WAN interface for which you want to configure port triggering rules.
Trigger Start Port The trigger port is a port (or a range of ports) that causes (or triggers) the Zyxel Device 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.
Trigger End Port
Type a port number or the ending port number in a range of port numbers.
Trigger Protocol
Select the transport layer protocol from
TCP
,
UDP
, or
TCP/UDP
.
Open Start Port
The open port is a port (or a range of ports) that a server on the WAN uses when it sends out a
particular service. The Zyxel Device 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.
Open End Port
Type a port number or the ending port number in a range of port numbers.
Open Protocol
Select the transport layer protocol from
TCP
,
UDP
, or
TCP/UDP
.
Cancel
Click
Cancel
to exit this screen without saving any changes.
OK
Click
OK
to save your changes.
