User's Manual

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SMCD3GN2 Wireless Cable Modem Gateway Administrator Manual

NAT Settings

Using the NAT Settings menu, you can enable the Gateway’s Network Address Translation

(NAT) table and allow multiple users at your local site to access the Internet. To access the

NAT Settings menu, click NAT in the menu bar. Figure 50 shows an example of the menu.

By default, the Gateway’s NAT module is enabled. To disable it, uncheck Enable NAT

Module and click Apply. To enable it, check Enable NAT Module and click Apply.

If you enable the Gateway’s NAT module, the following submenus appear under NAT in the

menu bar:

y Port Forwarding - lets you configure the Gateway to provide port-forwarding services

that let Internet users access predefined services. See page 96.

y 1-to-1 Mapping - lets you use the NAT to perform 1-to-1 mapping between global IP

addresses on the cable modem WAN interface and the private IP address on the LAN.

See page 102.

Note: If you change this setting, the Gateway reboots automatically.

Figure 50. NAT Settings Menu