Configuring Your Gateway
Table 12. Predefined Service Menu Options
Option Description
Service List of predefined services from which you can choose.
LAN Server IP IP address of the LAN PC or server that is running the service.
Remote IPs Forwards the service to any remote IP address, one remote IP address, or a range of remote IP
addresses.
Start IP To forward to:
• A single remote IP address, enter the remote IP address.
• A range of remote IP addresses, enter the starting IP address here and the ending IP address
range in the next field.
This field is unavailable if the Gateway is configured for any remote IP addresses.
End IP Enter the ending IP address in the remote IP address range. This field is unavailable if the Gateway
is configured for any remote IP addresses or for a single remote IP address.
Adding a Port Forwarding Entry for a Customer-Defined Service
Using the following procedure, you can define special application services you want to
provide to the Internet. The following example shows how to set port forwarding for a Web
server on an Internet connection, where port 80 is blocked from the WAN side, but port 8000
is available.
Name: Web Server
Type: TCP
LAN Server IP: 192.168.0.100
Remote IPs: Any (allow access to any public IP)
Public Port: 8000
Private Port: 80
With this configuration, all HTTP (Web) TCP traffic on port 8000 from any IP address on the
WAN side is redirected through the firewall to the Internal Server with the IP address
192.168.0.100 on port 80.
To create your own customized port-forwarding rules:
1. In the Port Forwarding menu, click the Add button below the Customer Defined Service
Table. The Customer Defined Service menu appears (see Figure 26).
2. Complete the fields in the Customer Defined Service menu (see Table 10). (Or click Back
to return to the Port Forwarding Settings menu or Cancel to cancel any selections you
made.)
3. Click Apply. The Port Forwarding menu reappears, with the predefined service you
configured shown in the Customer Defined Service Table.
4. To configure additional services (up to 100, including predefined services), repeat steps 1
through 3. When you finish, click Apply in the LAN Settings menu to save your settings.
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SMCD3GN Wireless Cable Modem Gateway User Manual