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Hardware Manual for the Model CG814WG Wireless Cable Modem Gateway
Hardware Overview 1-3
USB Port
A USB connection for your computer eliminates the need for installing an Ethernet card.
Protocol Support
The CG814WG supports the Transmission Control Protocol/Internet Protocol (TCP/IP).
Appendix D, "Networks, Routing, and Firewall Basics" provides further information on TCP/IP.
• IP Address Sharing by NAT
The CG814WG allows several networked PCs to share an Internet account using only a single
IP address, which may be statically or dynamically assigned by your Internet service provider
(ISP). This technique, known as Network Address Translation (NAT), allows the use of an
inexpensive single-user ISP account.
• Automatic Configuration of Attached PCs by DHCP
The CG814WG dynamically assigns network configuration information, including
IP, gateway, and domain name server (DNS) addresses, to attached PCs on the LAN using the
Dynamic Host Configuration Protocol (DHCP). This feature greatly simplifies configuration
of PCs on your local network.
• DNS Relay
When DHCP is enabled and no DNS addresses are specified, the gateway provides its own
address as a DNS server to the attached PCs. The gateway obtains actual DNS addresses from
the ISP during connection setup and forwards DNS requests from the LAN.
Easy Installation and Management
You can install, configure, and operate the CG814WG within minutes after connecting it to the
network. The following features simplify installation and management tasks:
• Browser-based management
Browser-based configuration allows you to easily configure your gateway from almost any
type of personal computer, such as Windows, Macintosh, or Linux. A user-friendly Setup
Wizard is provided and online help documentation is built into the browser-based Web
Management Interface.
• Diagnostic functions
The gateway incorporates built-in diagnostic functions such as Ping, DNS lookup, and remote
reboot. These functions allow you to test Internet connectivity and reboot the gateway. You
can use these diagnostic functions directly from the CG814WG when your are connect on the
LAN or when you are connected over the Internet via the remote management function.