P-660H/HW-D Series User’s Guide
Chapter 8 Network Address Translation (NAT) Screens 136
Figure 75 NAT General (P-660H-D)
The following table describes the labels in this screen.
8.4 Port Forwarding
A port forwarding set is a list of inside (behind NAT on the LAN) servers, for example, web or
FTP, that you can make visible to the outside world even though NAT makes your whole
inside network appear as a single computer to the outside world.
You may enter a single port number or a range of port numbers to be forwarded, and the local
IP address of the desired server. The port number identifies a service; for example, web
service is on port 80 and FTP on port 21. In some cases, such as for unknown services or
where one server can support more than one service (for example both FTP and web service),
it might be better to specify a range of port numbers. You can allocate a server IP address that
corresponds to a port or a range of ports.
Table 46 NAT General
LABEL DESCRIPTION
Active
Network
Address
Translation
(NAT)
Select this check box to enable NAT.
SUA Only Select this radio button if you have just one public WAN IP address for your ZyXEL
Device.
Full Feature Select this radio button if you have multiple public WAN IP addresses for your ZyXEL
Device.
Max NAT/
Firewall
Session Per
User
Enter the highest number of concurrent NAT and/or firewall sessions that the ZyXEL
Device will permit a user to have.
Apply Click Apply to save your changes back to the ZyXEL Device.
Cancel Click Cancel to reload the previous configuration for this screen.
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