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L.A.N. Local Area Network - An Overview |
A local area network (LAN) consists of two or more computers connected together in a building or home using software and hardware. These connections can either be via cable (usually called CAT5e) or wirelessly via one of the approved wireless standards. A LAN is contrasted to a wide area network (WAN) such as the Internet, which can cover a much large geographical area. In a client / server LAN, there is a main computer or “File Server”, and normal computers called “clients”. By creating a LAN in the home or office, computers on the LAN can share files, resources and, if desired, an Internet connection. Crucially, this approach provides for the centralisation of data, making backup far more straightforward.
A LAN is fairly easy to setup. All Microsoft operating systems since Windows 98 Special Edition (SE) have included built-in networking software. In terms of hardware, each computer requires a network interface card (NIC).
A switch is also required. This is a device that resembles an external modem and directs information on the network. If the LAN will be talking to another network, like the Internet, a router is also required. Luckily, one can purchase an external DSL modem with a built-in switch and router, in wireless or wired configurations.
Desktop computers typically use internal NICs (Network Interface Cards) that slip into an available slot on the motherboard, while a laptop might use a portable computer (PC) NIC. This type of NIC resembles thick credit card that can be inserted into the PC card slot on the laptop.
If the LAN is to be hard-wired, each NIC must have an Ethernet port for connecting an Ethernet cable. In a wireless LAN, each NIC might feature a small radio wave antenna. The server is hard-wired to the DSL modem, switch or router, while the clients can communicate wirelessly, if desired. If there is to be no connection to the Internet or any other LAN or WAN, a switch alone will be fine.
Once the LAN has been set up, an administrator can designate which files and programs can be shared amongst users, and in turn which users are able to access which files. Some areas of the server may be kept behind a firewall to prevent access. All traffic on the LAN, including email, Internet surfing and other activities, can be monitored by the administrator using various tools.
L.A.N. - Local Area Network - What are the Benefits
The advantages of a LAN in the office are manifold. By having a central printer, for example, a business can avoid buying individual printers for each workstation. Workflow is enhanced while being easier than ever to control and administer. Flexibility and creativity can also improve. A LAN is a win-win situation for management and employees alike.
A LAN at home is extremely convenient. Share programs, images, music and digital projects, and enjoy gaming. Share a high-end colour printer, scanner or other equipment. If concerned about your children’s Internet use, a LAN is one way to supervise online activity.
A hard-wired LAN is more trouble to install, as it requires running a physical Ethernet cable from each client to the DSL, switch or router. However, a wired LAN is reliable and secure. A wireless LAN is easier to install and less expensive, but requires a few more steps in the software setup to ensure it is secure. It may also be slower than a wired LAN, but this depends on the wireless standard used, as newer standards now effectively compete with Ethernet speeds.
L.A.N. Local Area Network - How can it help your Business
Businesses with more than 5 employees should seriously consider a centralised client / server Network. Building a solid infrastructure for any business starts with a good centralised design which in turn provides room for future growth with minimal investment and duplication of effort. Consider the number of devices that will be connected to the network (PCs, printers, or other devices).
It is important that you work with someone who understands your business today and who has the vision for what your needs will be like in the future, while not overselling or under-sizing the solution. The biggest mistake most businesses make with their first network is not considering future adds, moves and changes to the network and the equipment.
L.A.N. Local Area Network - Client Testimonials
- Leeds Based Medical Company - Nemark were asked to assist in the delivery of a new network to support our expanding business, After the initial consultation a solution was developed to take our company forward. The resulting new network was delivered on time, within budget and has really helped our team get more out of IT. Thanks Guys!
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