ZyXEL Communications NBG410W3G Series User Manual

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Chapter 12 Network Address Translation (NAT)
NBG410W3G Series User’s Guide
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Figure 143   Port Translation Example
12.6  Port Forwarding Screen 
Click ADVANCED > NAT > Port Forwarding to open the Port Forwarding screen. 
"
If you do not assign a Default Server IP address, the ZyXEL Device discards 
all packets received for ports that are not specified here or in the remote 
management setup.
 for port numbers commonly used for particular services. 
"
The last port forwarding rule is reserved for Roadrunner services. The rule is 
activated only when you set the WAN Encapsulation to Ethernet and the 
Service Type to something other than Standard.
A = 192.168.1.33
HTTP: 80
B = 192.168.1.34
HTTP: 80
LAN
WAN
192.168.1.1
Port Translation
192.168.1.33: 80 <----> a.b.c.d: 8080
192.168.1.34: 80 <----> a.b.c.d: 8100