ZyXEL Communications SBG3500-N000 User Manual page 208

Chapter 11 Network Address Translation (NAT)
third (C in the example). You assign the LAN IP addresses and the ISP assigns the WAN IP address.
The NAT network appears as a single host on the Internet.
Figure 74 Multiple Servers Behind NAT Example
A=192.168.1.33
B=192.168.1.34
C=192.168.1.3
Click Network Setting > NAT > Port Forwarding to open the following screen.
See Appendix F on page 394
Figure 75 Network Setting > NAT > Port Forwarding
The following table describes the fields in this screen.
Table 53 Network Setting > NAT > Port Forwarding
LABEL
Add new rule
#
Status
Service Name
WAN Interface
WAN IP
Server IP
Address
Start Port
End Port
Translation
Start Port
Translation End
Port
208
LAN
192.168.1.1
D=192.168.1.36
for port numbers commonly used for particular services.
DESCRIPTION
Click this to add a new rule.
This is the index number of the entry.
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.
This shows the service's name.
This shows the WAN interface through which the service is forwarded.
This field displays the incoming packet's destination IP address.
This is the server's IP address.
This is the first external port number that identifies a service.
This is the last external port number that identifies a service.
This is the first internal port number that identifies a service.
This is the last internal port number that identifies a service.
WAN
IP Address assigned by ISP
SBG3500-N000 User's Guide