ZyXEL Communications SBG5500-A, User Manual

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Chapter 8 Network Address Translation (NAT)
SBG5500 Series User’s Guide
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8.3.1 Add/Edit Port Triggering Rule
This screen lets you create new port triggering rules. Click Add in the Port Triggering screen or select a
rule and click Edit to open the following screen.
Figure 99 Port Triggering: Add/Edit
Status This field displays whether the rule is active or not. A green ON button signifies that this rule is
active. A gray OFF button signifies that this rule is not active.
Click the slide button to turn on or turn off the rule.
Service Name This field displays the name of the service used by this rule.
WAN Interface This field shows the WAN interface through which the service is forwarded.
Trigger Start Port The trigger port is a port (or a range of ports) that causes (or triggers) the SBG to record the IP
address of the LAN computer that sent the traffic to a server on the WAN.
This is the first port number that identifies a service.
Trigger End Port This is the last port number that identifies a service.
Trigger Protocol This is the trigger transport layer protocol.
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 SBG forwards the traffic with this port (or range of ports) to the client
computer on the LAN that requested the service.
This is the first port number that identifies a service.
Open End Port This is the last port number that identifies a service.
Open Protocol This is the open transport layer protocol.
Table 44 Network Setting > NAT > Port Triggering (continued)
LABEL DESCRIPTION