Port Forwarding; Default Server Ip Address; Figure 72 Nat General; Table 50 Nat General - ZyXEL Communications P-661H Series User Manual

Figure 72 NAT General

The following table describes the labels in this screen.

Table 50 NAT General

LABEL
Active
Network
Address
Translation
(NAT)
SUA Only
Full Feature
Apply
Cancel

7.4 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.
Many residential broadband ISP accounts do not allow you to run any server processes (such
as a Web or FTP server) from your location. Your ISP may periodically check for servers and
may suspend your account if it discovers any active services at your location. If you are
unsure, refer to your ISP.

7.4.1 Default Server IP Address

In addition to the servers for specified services, NAT supports a default server IP address. A
default server receives packets from ports that are not specified in this screen.
P-661H/HW Series User's Guide
Chapter 7 Network Address Translation (NAT) Screens
DESCRIPTION
Select this check box to enable NAT.
Select this radio button if you have just one public WAN IP address for your ZyXEL
Device.
Select this radio button if you have multiple public WAN IP addresses for your ZyXEL
Device.
Click Apply to save your changes back to the ZyXEL Device.
Click Cancel to reload the previous configuration for this screen.
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