data communication, gateway introduction
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Here you will get the basic introduction of Home Computer Networking-Basic Setup, wireless access point, lan troubleshooting, lan connectivity, ADSL and DSL internet, gateway device, vpn and wi-fi.

. Computer Networks exists for more than 30 years and only recently they have become more popular at home both in forms of wired and wireless networking. Now many computer literate people from all over the world wish to have a computer network at home. There are many advantages and usage of a network, which we have described in the other sections of this website.

Millions of people have adopted the home network and now they are looking for the more advanced technology in the home networking and that is “wireless home networking”.
We will discuss the various basic and advance aspects of the home networking considering that no prior knowledge of the network technology. We will briefly explain the setup, troubleshooting, installation, network devices used and other aspects of the home networking.
Today in the age of Information technology, it’s not difficult for someone to have more than one PCat home.

 

If I apply this situation to you (that you have more than one computer at your home) then most probably you would wish to have access on the data and resources like, hard disk, printer, modem of the other PC and you can even access the broadband Internet like DSL or cable modem and you can also play a multi-player network game. All this is possible by just connecting and configuring the two computers at your home. There are several ways to do the home networking but all it depends on budget, security needs and nature of your work

 

Your cable/DSL modem plugs straight into the computer. The computer is exposed to the public Internet (indicated by the color red). There is no connection for more than one computer. You only have one IP address from your ISP.

If you have a broadband Internet connection at your home like DSL or cable net then you can share your internet connection with more than one PC at your home by installing the network card in each PC and configuring the hub/switch or a router.

If you have two PCs at your home and you want to share your internet connection with the other computer then you can simply share the internet connection by following these steps.

1. Connect two PCs with CAT5 cable and make it a cross over cable.

2. After connecting both the PCs, assign a different IP addresses by going in the properties of the LAN card like 100.100.100.1 and 100.100.100.2 or you can assign any other IP address. (Please note that these IP addresses that you use for your home networking are the private IP addresses and they have nothing to do with the IP address that are used on the internet (public IP addresses).

3. After assigning the IP addresses install software on the computer one, which will be used for sharing the Internet connection and this will be called proxy software (and your computer one will act as a Proxy Server). The more common proxy software is Wingate, Win Proxy and Internet connection sharing (ICS). ICS is by default installed in Windows operating systems and can be configured separately.

Internet access by using a hardware router/gateway/firewall device
In this situation, you have to install a hardware router, which will be act as a gateway. Your router will be connected with the public IP address, which will be assigned to your by your ISP and hub/switch will be attached to the router. All the other PCs in your home or small network will be directly attached to that hub or switch.

How to setup the Gateway Device

Gateway device – There are different gateway devices available from different companies like

dlink.com, linksys.com, netgear.com and Cisco systems. Each device has difference setup configurations but the basic purpose of all these devices is the same.
The Gateways have a number of common features and functions such as NAT (Network Address Translation) that translate your public IP address into the private IP address on your network, DHCP server, PPP. Before buying any gateway device, make sure gateway device must have all these features.

Some advance gateways have the following features.

• wireless access point

• VPN
• print server
• DMZ (make one PC available to the Internet but still protect it through the firewall
• multi-port
• Content filtering

Most advance gateways comes with integrated hubs or switches and if your gateway don’t have the functionality of a hub/switch then you will have to buy a hub/switch for your home network. Before buying a hub/switch you should consider the two main things 1. it should support dual

speed i.e 10mbps and 100mbps and 2. it should have maximum available ports.
Cat5 cable – For setting up a home network, you will need a several pieces of the CAT5 Ethernet cables. These cables can be used in the different scenarios like for connecting the two PCs (if you have a two computer network) and if you have more than two computers then each computer will be directly connected with the hub/switch or gateway device. The most commonly used cable for computer networking is Cat5 cable.

Once you have all the required things like cables, hub/switch, LAN cards etc. then install a network card in each PC. You must make sure that each card is properly installed and is not showing any signs of conflict with the other network devices.

How to connect two computers wirelessly

In some recent years, wireless networking solutions have became very popular. There are several wireless technologies exists to support the wireless networking.

These technologies include Wi-Fi, Bluetooth and infrared.

Wi-Fi connections can reach at a greater distance than the other wireless solutions that are mentioned above. Many new PCs and Laptops now have the built-in capability of the Wi-Fi. Wi-Fi can be used with or without network fixture. In the two computers Wi-Fi networking minus a fixture also called ad-hoc Wi-Fi.

Bluetooth technology supports high speed wireless connectivity and communication between the two computers without the need of a network fixture. Bluetooth is commonly used when networking a computer with the consumer’s cell phone or handheld device. Bluetooth works well if both the devices are in the same room or location. While networking among the handheld devices consider the Bluetooth technology solution.

Infrared networking exists before the Wi-Fi or Bluetooth technologies on the Laptops. Infrared wireless connections only work between two computers and do not require a fixture. Infrared networking is relatively fast so consider using it if your computer supports it and you don’t have

the Wi-Fi and Bluetooth features in your computer.

 

 

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