ZyXEL Communications NBG7815 User Manual page 95

Use this screen to enable NAT, set a default server and view the summary table of your NBG7815's port
forwarding settings. Click Settings > Internet > NAT & Port Forwarding to show the following screen.
Figure 47 Settings > Internet > NAT & Port Forwarding
The following table describes the labels in this screen.
Table 29 Expert Mode > WAN > NAT > General
LABEL DESCRIPTION
NAT & Port Forwarding
Network Address Network Address Translation (NAT) allows the translation of an Internet protocol address used
Translation (NAT) within one network (for example a private IP address used in a local network) to a different IP
address known within another network (for example a public IP address used on the
Internet).
Select Enable to activate NAT. Select Disable to turn it off.
Server Setup
Default Server You can decide whether you want to use the default server or specify a server manually. In
addition to the servers for specified services, NAT supports a default server. A default server
receives packets from ports that are not specified in the port forwarding summary table
below.
Select this to use the default server.
Change To Server Select this and manually enter the server's IP address.
Port Forwarding Rule
Enable Port Select Enable to allow port forwarding. Otherwise, select Disable.
Forwarding
No. This number uniquely identifies the port forwarding rule.
Name This field displays a name to identify this rule.
Protocol This is the transport layer protocol used for the service.
External Port This is the port number used to connect to this service using the router's external IP address on
the WAN.
Chapter 9 WAN
NBG7815 User's Guide
95