ZyXEL Communications P-660HN-51 User Manual page 111

Chapter 8 Network Address Translation (NAT)
Figure 42 Multiple Servers Behind NAT Example
A=192.168.1.33
B=192.168.1.34
C=192.168.1.3
D=192.168.1.36
Click Network Settings > NAT > Port Forwarding to open the following screen.
See Appendix D on page 284
Figure 43 Network Settings > NAT > Port Forwarding
The following table describes the fields in this screen.
Table 27 Network Settings > NAT > Port Forwarding
LABEL DESCRIPTION
Add new rule Click this to add a new rule.
# This is the index number of the entry.
Status This field displays whether the NAT rule is active or not. A yellow bulb signifies that this
rule is active. A gray bulb signifies that this rule is not active.
Service Name This shows the service's name.
WAN Interface This shows the WAN interface through which the service is forwarded.
External Start Port This is the first external port number that identifies a service.
External End Port This is the last external port number that identifies a service.
Internal Start Port This is the first internal port number that identifies a service.
Internal End Port This is the last internal port number that identifies a service.
Server IP Address This is the server's IP address.
Modify Click the Edit icon to edit this rule.
Click the Delete icon to delete an existing rule.
LAN
192.168.1.1
for port numbers commonly used for particular services.
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WAN
IP Address assigned by ISP