application or type of port that is being used. For example, a firewall can be configured to work with an FTP or Telnet server. Or a firewall can be configured to work with specific UDP or TCP ports to allow certain applications or games to work properly over the Internet.

Introduction to Local Area Networking

Local Area Networking (LAN) is the term used when connecting

several computers together over a small area such as a building or group of buildings. LAN’s can be connected over large areas. A collection of LAN’s connected over a large area is called a Wide Area Network (WAN).

A LAN consists of multiple computers connected to each other. There are many types of media that can connect computers together. The most common media is CAT5 cable; UTP or STP twisted pair wire. On the other hand, wireless networks do not use wires; instead they communicate over radio waves. Each computer must have a Network Interface Card (NIC), which communicates the data between computers. A NIC is usually a 10Mbps network card, or 10/100Mbps network card, or a wireless network card.

Most networks use hardware devices such as hubs or switches that each cable can be connected to in order to continue the connection between computers. A hub simply takes any data arriving through each port and forwards the data to all other ports. A switch is more sophisticated, in that a switch can determine the destination port for a specific piece of data. A switch minimizes network traffic overhead and speeds up the communication over a network.

Networks take some time in order to plan and implement correctly. There are many types of scenarios to consider which could affect the operability of a network.

Introduction to Virtual Private Networking

Virtual Private Networking (VPN) uses a publicly wired network (the Internet) to securely connect two different networks as if they were the same network. For example, an employee can access the corporate network from home using VPN, allowing the employee to access files and printers. Here are several different implementations of VPN that can be used.

7

Page 6 Page 8
Page 7
Image 7
D-Link DI-804 user manual Introduction to Local Area Networking, Introduction to Virtual Private Networking
Page 6 Page 8

DI-804 specifications

The D-Link DI-804 is a versatile and reliable broadband router that has made a significant impact in the networking sector. Designed to meet the needs of both home and small office environments, this router combines essential features with advanced technologies to deliver a seamless online experience.

One of the standout features of the D-Link DI-804 is its ability to support multiple WAN connections. This means that users can connect different Internet Service Providers (ISPs) to ensure redundancy and enhance uptime. In case one connection fails, the router can automatically switch to the backup connection, minimizing disruptions.

The router employs advanced routing protocols, including RIP v1 and v2, which help in managing and directing traffic efficiently. It also features a built-in DHCP server, making it easier to manage IP address allocations for connected devices. With support for static routing, users have the flexibility to customize their network according to their specific needs.

Security is a priority for the D-Link DI-804, which comes equipped with a robust firewall that protects the internal network from external threats. The firewall features Stateful Packet Inspection (SPI), making it difficult for intruders to penetrate the network. Additionally, the router supports Virtual Private Network (VPN) pass-through, allowing users to securely connect to remote networks, which is particularly beneficial for remote workers or businesses that require secure communications.

For users looking to create a wireless network, the DI-804 offers optional wireless capabilities through a separate wireless access point. This allows for the extension of the network to include wireless devices, providing flexibility in connectivity options.

In terms of connectivity, the D-Link DI-804 is equipped with four 10/100 Fast Ethernet LAN ports, facilitating wired connections for devices such as computers, printers, and gaming consoles. The router supports auto-MDI/MDI-X, which automatically detects and configures the connection type, simplifying the setup process.

The D-Link DI-804 also features user-friendly management tools, making it easy for users to configure and monitor their network. An intuitive web-based interface provides access to various settings and statistics, allowing for straightforward customization according to individual preferences.

Overall, the D-Link DI-804 is a feature-rich router that balances performance, security, and ease of use. Its blend of advanced technologies and essential features makes it an ideal choice for users seeking a reliable networking solution, whether for home use or in a small office environment. With its emphasis on connectivity, security, and ease of management, the DI-804 stands out as a commendable option in the broadband router market.
Top Page Image Contents