ZyXEL Communications P-661H-61, Manual

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Chapter 11 Network Address Translation (NAT)
P-661HNU-Fx User’s Guide
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addresses and the ISP assigns the WAN IP address. The NAT network appears as a
single host on the Internet.
Figure 76 Multiple Servers Behind NAT Example
11.2.1 The Port Forwarding Screen
Click Network Setting > NAT to open the Port Forwarding screen.
See Appendix E on page 359 for port numbers commonly used for particular
services.
Figure 77 Network Setting > NAT > Port Forwarding
The following table describes the fields in this screen.
A=192.168.1.33
D=192.168.1.36
C=192.168.1.35
B=192.168.1.34
WAN
LAN
192.168.1.1
IP Address assigned by ISP
Table 43 Network Setting > NAT > Port Forwarding
LABEL DESCRIPTION
Add new rule Click this to add a new port forwarding rule.
# This is the index number of the entry.
Status This field indicates whether the rule is active or not.
Clear the check box to disable the rule. Select the check box to enable
it.
Service Name This is the service’s name. This shows User Defined if you manually
added a service. You can change this by clicking the edit icon.
WAN Interface This shows the WAN interface through which the service is forwarded.
Start Port This is the first external port number that identifies a service.
End Port This is the last external port number that identifies a service.