Reference Manual for the 54 Mbps Wireless ADSL Firewall Router DG834G

Domain Name Server

Many of the resources on the Internet can be addressed by simple descriptive names such as www.NETGEAR.com. This addressing is very helpful at the application level, but the descriptive name must be translated to an IP address in order for a user to actually contact the resource. Just as a telephone directory maps names to phone numbers, or as an ARP table maps IP addresses to MAC addresses, a domain name system (DNS) server maps descriptive names of network resources to IP addresses.

When a PC accesses a resource by its descriptive name, it first contacts a DNS server to obtain the IP address of the resource. The PC sends the desired message using the IP address. Many large organizations, such as ISPs, maintain their own DNS servers and allow their customers to use the servers to look up addresses.

IP Configuration by DHCP

When an IP-based local area network is installed, each PC must be configured with an IP address. If the PCs need to access the Internet, they should also be configured with a gateway address and one or more DNS server addresses. As an alternative to manual configuration, there is a method by which each PC on the network can automatically obtain this configuration information. A device on the network may act as a Dynamic Host Configuration Protocol (DHCP) server. The DHCP server stores a list or pool of IP addresses, along with other information (such as gateway and DNS addresses) that it may assign to the other devices on the network. The DG834G wireless router has the capacity to act as a DHCP server.

The DG834G wireless router also functions as a DHCP client when connecting to the ISP. The gateway can automatically obtain an IP address, subnet mask, DNS server addresses, and a gateway address if the ISP provides this information by DHCP.

Internet Security and Firewalls

When your LAN connects to the Internet through a router, an opportunity is created for outsiders to access or disrupt your network. A NAT router provides some protection because by the very nature of the Network Address Translation (NAT) process, the network behind the NAT router is shielded from access by outsiders on the Internet. However, there are methods by which a determined hacker can possibly obtain information about your network or at the least can disrupt your Internet access. A greater degree of protection is provided by a firewall router.

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Network and Routing Basics

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NETGEAR DG834G manual Internet Security and Firewalls, Domain Name Server, IP Configuration by Dhcp
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DG834G specifications

The NETGEAR DG834G is a versatile and reliable wireless ADSL modem/router that has gained popularity among both home and small office users. Designed to offer high-speed internet connectivity and robust network capabilities, the DG834G provides an ideal solution for users looking for both performance and convenience.

One of the standout features of the DG834G is its ADSL2/2+ compatibility, supporting download speeds of up to 24 Mbps and upload speeds of up to 1 Mbps. This makes it well-suited for activities such as streaming high-definition video, online gaming, and video conferencing. The device also ensures a reliable connection, thanks to its built-in Quality of Service (QoS) capabilities, which prioritize bandwidth allocation for critical applications.

The DG834G incorporates 802.11g wireless technology, offering wireless data transfer rates of up to 54 Mbps. This allows users to connect multiple devices to the network without experiencing significant drops in speed. Additionally, the router features a range of up to 150 feet indoors and 300 feet outdoors, ensuring robust coverage for most home and small office environments.

Security is a key focus in the design of the DG834G. The router supports Wi-Fi Protected Access (WPA) and Wired Equivalent Privacy (WEP) encryption protocols, helping to safeguard the network from unauthorized access. Users can also take advantage of the device’s firewall features, such as Stateful Packet Inspection (SPI), to protect against potential online threats.

Installation and setup of the DG834G are user-friendly, featuring a web-based interface that simplifies the configuration process. This allows users to easily manage their network settings, configure parental controls, and set up guest access for visitors without compromising the primary network.

The DG834G also includes four Ethernet ports, enabling wired connections for devices that require a stable and high-speed connection, such as gaming consoles or desktop computers. This flexibility in connectivity options enhances the device’s utility for diverse networking needs.

Overall, the NETGEAR DG834G is a powerful and reliable ADSL modem/router that combines advanced features, robust security, and ease of use. Its combination of high-speed internet support and versatile connectivity options makes it an excellent choice for users looking to enhance their home or small office network.
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