Netgear CG814M ユーザーズマニュアル

Preparing Your Network

C-9

For broadband access to the Internet, you need to contract with an Internet service provider (ISP) 
for a single-user Internet access account using a cable modem. 

For a single-user Internet account, your ISP supplies TCP/IP configuration information for one 
computer. With a typical account, much of the configuration information is dynamically assigned 
when your PC is first booted up while connected to the ISP, and you will not need to know that 
dynamic information. 

In order to share the Internet connection among several computers, your gateway takes the place of 
the single PC, and you need to configure it with the TCP/IP information that the single PC would 
normally use. When the gateway’s Internet port is connected to the broadband modem, the 
gateway appears to be a single PC to the ISP. The gateway then allows the PCs on the local 
network to masquerade as the single PC to access the Internet through the broadband modem. The 
method used by the gateway to accomplish this is called Network Address Translation (NAT) or IP 
masquerading.

More and more, ISPs are dynamically assigning configuration information. However, if your ISP 
does not dynamically assign configuration information but instead used fixed configurations, your 
ISP should have given you the following basic information for your account: