The Port Forwarding Screen; Configuring The Port Forwarding Screen - ZyXEL Communications eircom D1000 User Manual

9.3 The Port Forwarding Screen

Use this screen to forward incoming service requests to the server(s) on your local network.
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.
Please refer to RFC 1700 for further information about port numbers.
Note: 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.
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.
Note: If you do not assign a Default Server IP address, the Device discards all packets
received for ports that are not specified here or in the remote management setup.

9.3.1 Configuring the Port Forwarding Screen

Click Network Setting > NAT > Port Forwarding to open the following screen.
Note: Make sure NAT is activated on the WAN connection before you configure a port
forwarding rule for it. For the default WAN connection (PVC0), activate NAT in the
Network Setting > NAT > General screen. For other WAN connections
(PVC1~PVC7), activate NAT for an individual WAN connection in the Broadband >
More Connections > Edit screen.
Figure 86 Network Setting > NAT > Port Forwarding
eircom D1000 modem User's Guide
Chapter 9 Network Address Translation (NAT)
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