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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Figure 94 Multiple Servers Behind NAT Example
Click Configuration > NAT > Port Forwarding to open the following screen.
Figure 95 Configuration > NAT > Port Forwarding
The following table describes the fields in this screen.
Table 42 Configuration > NAT > Port Forwarding
LABEL DESCRIPTION
Add Click this to add a new rule.
Edit Double-click an entry or select it and click Edit to open a screen where you can modify the rule’s
settings.
Remove To remove an existing rule, select it and click Remove .
# This is the index number of the rule.
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.
Firewall This shows a firewall exception icon if there is an exception filter rule on the SBG firewall for this
port forwarding rule, otherwise this field is empty.
Service Name This shows the service’s name.
Protocol This shows the IP protocol supported by this virtual server, whether it is TCP , UDP , or TCP/UDP .
WAN Interface This shows the WAN interface through which the service is forwarded.
WAN IP This field displays the incoming packet’s destination IP address.
Starting Port This is the first external port number that identifies a service.
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