Showing posts with label computer network. Show all posts
Showing posts with label computer network. Show all posts

The installation of the Local Area Network (LAN)

The chance of this post I try to give something to friends who might be on the enlightenment that I have to say here, many are already familiar with or even go into what I would post this time, something which I will post this time talking about the installation of Local Area Network (LAN). I emphasize on some of the discussion below :
  1. Explaining the network hardware and their functions.
  2. Explains IP addressing Address.
  3. Calculate IP addressing and Subnet Address IP Address.
  4. Explain the network topology.
  5. Topology design specifications required.
Network hardware can be broadly at the start of the computer itself to the device used to endorse a global network. As an example of network hardware that is inside the computer is NIIC or Network Interface Card. NIC is also referred to as LAN Card, LAN Card name is more popular than NIC.

LAN Card
NIC or LAND Card

Out of the NIC is generally connecting it with the switch that is used together with another computer.
Switch
Switch

Router
Router

If the computer networks connected to different networks, It would require a router device. To protect and secure the network are the Firewall, Proxy server. Besides, the partners are still referred to as a bridge network, wireless router, access point, and so forth.

Each network device requires an IP Address, IP Address There are two types of IPv4 and IPv6, which is commonly used IPv4. IP Address IPv4 version consists of 4 groups of 8-bit binary number is converted to a decimal number that is easy to understand.

Biner
Decimal
00000000
0
11111111
255

IP address is divided into five classes, Class A, Class B, Class C, Class D, Class E, but in actual classes used to provide IP address is class A, Class B, Class C.

Class
Biner
Decimal
A
0000 0001.X.Y.Z to 0111 1111.X.Y.Z
    1.X.Y.Z to 127.X.Y.Z
B
1000 0000.X.Y.Z to 1011 1111.X.Y.Z
128.X.Y.Z to 191.X.Y.Z
C
1100 0000.X.Y.Z to 1101 1111.X.Y.Z
192.X.Y.Z to 223.X.Y.Z

Each class has a public IP for the benefit of local interests

Class
IP Local
A
  10.    0.0.0 to   10.255.255.255
B
172.  16.0.0 to 172.  31.255.255
C
192.168.0.0 to 192.168.255.255

Class A has a special IP address that has been allocated for testing the network, which is 127.0.0.0
Write the IP address error will cause the appearance of error messages, for example if address 127.0.0.0 IP address to NIC.

IP Address
Error message when one writes the IP address

Each class has an IP subnet mask to determine the network number and host and user.


Class
Subnet Mask (Default)
A
1111 1111.0000 0000.0000 0000.0000 0000 or 255.0.0.0
B
1111 1111.1111 1111.0000 0000.0000 0000 or 255.255.0.0
C
1111 1111.1111 1111.1111 1111.0000 0000 or 255.255.255.0


As an example of a class C IP address local: 192.168.0.1 with a subnet mask of 255.255.255.0

a number of binary subnet mask = 24, so the IP address 192.168.0.1/24 could be written as a binary number 0 is equal to 8 pieces, then the IP address 192.168.0.1 has a kind friend as much as 28 = 256, that is : 192.168.0.0 to 192.168. 0.255

192.168.0.0 Cannot be used as an IP address for the network, while 192.168.0.255 is the IP address for the broadcast. So the effective number of IP addresses only 256-2 = 254.

Than 1111 111.1111 1111 .1111 1111.0000 0000 can also be 1111 111.1111 1111 .1111 1111.1000 0000 or 1111 111.1111 1111 .1111 1111.1100 0000

Subnet Mask 1111 1111.1111 1111.1111 1111.1100 0000 Have a number of binary 1 = 26 and the number of binary 0 = 26

So for the same IP address 192.168.0.1/26, subnet mask of 255.255.255.192.
Binary 1 at the end of = 2 and a binary 0 = 6
binary 1 indicates the number of network = 22 = 4
Binary 0 indicates the host for each network26 = 64
IP Address in the table it can be:

IP Address
function
192.168.0.0
Network 1
192.168.0.1 to 192.168.0.62
User 1
192.168.0.63
Broadcast 1
192.168.0.64
Network 2
192.168.0.65 to 192.168.0.126
User 2
192.168.0.127
Broadcast 2
192.168.0.128
Network 3
192.168.0.129 to 192.168.0.61
User 3
192.168.0.191
Broadcast 3
192.168.0.192
Network 4
192.168.0.193 to 192.168.0.254
User 4
192.168.0.255
Broadcast 4

Make Wireless in your home

You have several computers in the house and you want all computers are connected in a small network. Actually there are 2 ways to dial, the first is to use a cable, and that both wirelessly. Which will be discussed here is the wireless connection, because the connection using a cable is less desirable because the need for long cables as well as in terms of aesthetics that are less attractive.

For simplicity, the discussion will be divided form the 4 categories namely, preparation equipment, connect the modem to the router, network settings, and the last is a computer connected to the network wirelessly. Let us begin.

Preparation Tools
the device should be prepared in advance is a cable modem, wireless router, as well as several wireless receivers for computers that need it

Cable modems function as a bridge between your internet service providers. In Indonesia, most services are Firstmedia worth it, despite numerous complaints about poor customer service professional. But if your area is not covered by these services you may be considering using IndosatM2 cable Internet service.

Wireless Router functions for connecting and providing Internet access to all computer or laptop that is connected to the appliance. Some activities that can be done if it is connected to the tool it is, sharing documents between computers, as well as streaming video and audio.

Wireless receiver functions to capture the wireless signal are transmitted by the wireless router. Usually installed on your computer (PC) using a USB or PCI card. But if you use a laptop, usually do not need this tool, because it has a built-in.

Connect the modem and router

We assume you have subscribed to one of the services mentioned above (First media or IndosatM2), it is time you plug your modem into your wireless router using an Ethernet cable (usually included the purchase of this cable modem). Please note in connecting to the router, not to the wrong port. Usually written to modem connection (Internet / WAN) as shown in the picture below (in green)

Watch YouTube Without Buffering !!

This is the new trick from me : )
I have collect all the possible way to speed up youtube until almost without buffering  : P
Ok, lets start... I have divided it into 4 way..

http://wartokaka.files.wordpress.com/2009/02/you-tube.jpg

1. Using Speedbit Video Accelerator v. 3.1.3.6

Come on download it here : http://www.videoaccelerator.com/download/
Then after you download, you should check which website that support on this software.
You can check it here : http://www.videoaccelerator.com/support/videosites/


2. Using Greasemonkey Script (Firefox user)
  • If you don't have this addons, you can download it here : https://addons.mozilla.org/en-US/firefox/addon/748
  • Then, you must come to this site : http://userscripts.org/scripts/show/33042 and install the 'Youtube Enhancer' script there. (just click the install button there)
  • Then, if someday the 'Youtube Enhancer' script has an update, you must install this script too : http://userscripts.org/scripts/show/26062
  • Open video on youtube for testing.. If you have install all stuff above correctly, then in the bottom of the video that you wanna watch there is a text View In very low quality (flv), click it. You can resize the video, then there is a 'skull' pic to stop the buffer and a light button to make the background dark. BUT REMEMBER !! YOU SHOULD TO CLICK View In very low quality (flv) TO SPEED UP THE BUFFERING PROCESS.
  • But, if you have a good connection, you can change it to high quality or medium quality : P
3. Using Google DNS      

Purpose : To accelerate the youtube ping to our computer. ( tested and works )
How to :
  • Open Control Panel
  • Then Network Connection
  • Then Local Area Network ( Double click LAN that is connected to us)
  • Click Properties
  • Double click TCP/IP
  • Click " Use the Following DNS address"
  • Enter the preferred : 8.8.8.8    ----    Enter Alternate : 8.8.4.4
  • CONGRATULATION!!!!! --> just compare it before and after you use the google DNS ^^
4. Using Youtube Feather Beta

This is the new way. I got this way from my friend and it works, this is unbelievable i think. The purpose using this is to accelerate the ping of youtube to our computer (same with google dns).

How to :
P.S : I have checked on this and not all the video we can watch with this way : (


Thats all for now guys, i hope it can help you :)
And if there is another way i get, i will update here...
: D
 
 
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