Setting Computers: Network

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Showing posts with label Network. Show all posts
Showing posts with label Network. Show all posts
How to Setting Computer Back to Factory Setting?
Here are some reasons to restore your computer back to factory settings: if you want to sell the computer to someone, download the software right the wrong, or removing memory. These steps will help you to get back to factory settings without any problems.

Difficulty: Easy
instructions

How to Setting Computer Back to Factory Setting?

Things You'll Need:
  1. CD factory settings 
  2. How to Use CD Restore Factory Settings 
  3. Be sure to transfer all the files that you want to save to a USB memory stick or burn to CD. 
  4. Insert the Restore Factory Settings into the CD drive. This CD is packed with your computer. 
  5. Confirm you want to restore the factory settings. The computer will begin to restore all settings. Do not interfere with your computer, as this process may take several hours. . 
  6. Reboot the computer to complete the process. 

How to Use Computer Rebooting the Start-Up

  1. Turn on your computer. Soon there will be a black screen. You can restore the factory settings without CD also. It will reset your BIOS.
  2. Press F1 when the black screen appears, you will enter the setup configuration mode. You will be presented with a menu. 
  3. Select Restore Factory. Your computer will do all the work for you. Like the CD, this process can take several hours. 

Warning

This process will erase everything but the operating system and factory-download the software.
Finding Free Proxy Servers That Work Well
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Get a Free Proxy Server List with Spys.ru
Proxy seems to be increasingly used in various parts of the world, the main attraction is being able to access blocked sites. In fact there are ISPs that do block proxy websites to bypass the restrictions prevent the use of the Internet users who have been assigned.

Actually some alternative ways to block and pass internet censorship, such as VPN, tunneling, web proxies and proxy servers. This time I discuss is how to get a public proxy server that can be used free of charge. Here I get a list of proxy servers are provided free of Spys.ru and not blocked by internet providers that I use.


Get a Free Proxy Server List with Spys.ru

You will see information about the IP address and port, the type of proxy, anonymous or not the information about you, city and country location of the proxy server, host name, and the date of the last proxy server is checked.


Get a Free Proxy Server List with Spys

For how to use a proxy server can be set proxy server in the Internet Explorer browser (Google Chrome uses the same settings) and Mozilla Firefox. After that, immediately check your IP address, if the IP address is successful then you will follow the proxy server is used.



Unfortunately there is no quality assurance or indicator of the ability of this free proxy server, so sometimes we need to try several to find the best server. But for the free stuff given we can not complain, so use it well.
Influence and Differences in Local Server, SG and US?
Just info and for your reference. Local vs. Local Servers Server USA (West Coast) vs. server Singapore. There are advantages and disadvantages of each of the data-center location, in our country the local network, or servers located in data centers in the United States (West Coast locations to take samples of the North / South, Seattle / Los Angeles) and a server in Singapore.

Influence and Differences in Local Server, SG and US?

Here will be given an overview and comparison of the respective location of the server (This is a picture, not the data is accurate).

Comparative figures using PING TIME in ms (milli-second).

Local server our country (Local Network / OpenIXP)

Visitor access to the website from users in the cities of our country is generally faster than if the server is in a data-center USA (<80ms vs. ± 250 ms).
Access from outside our country to local server include slow, and varies depending on the quality of international bandwidth provided by the data-center. (approximately 250ms s / d 1.500ms).
Suitable for websites that have only local or visitor majority of our country.
Less suitable for websites that also have quite a lot of visitors from outside our country.
Not suitable for websites that also want adequate rankings in various Search-Engine-known.
Data-Center Servers in Singapore


Influence and Differences in Local Server, SG and US

Visitor access to the website from users in the cities of our country more quickly than if the server is in a data-center USA (average of under 100ms). Access speed also depends on the quality of international bandwidth sold to customers who access the Internet, different from each ISP in our country.
Access from many major cities in our country is quite fast (<80 ms).
Access from Southeast Asia-very fast (more than 80 ms).
Access from East Asia very quickly (more than 100 ms).
Access from the North-American region fairly quickly (± 150 ms).
Access from Europe-Western region fairly quickly (± 200 ms).
Enough support for a website that has 50% of visitors from our country.
Quite adequate for a website that will be registered in a variety of Search-Engine-known.
Servers in Data-Center USA (West Coast)

Visitor access to the website from users in the cities of our country is generally slower than if the server is in a data-center Local Local (approximately ± 250 ms vs. <100ms). Access speed also depends on the quality of international bandwidth sold to customers who access the Internet, different from each ISP in our country.
Access from the North-American region very quickly (± 60 ms).
Access from Europe-Western region fairly quickly (± 100 ms).
Access from East Asia is fast enough (± 150 ms).
Access from Southeast Asia-fast enough (± 200 ms).
Access from other regions varied, and the average speed of ± 250 ms.
Less suitable for websites that have only local or visitor majority of our country.
Suitable for a website that also has quite a lot of visitors from outside our country.
Suitable for websites that also want adequate ranking in various Search-Engine-known (SEO purpose).
In addition to the location and ping-time, the number of routers as well as hardware and software factors also affect the performance of a server-workings of a server and websites are placed in it. Hopefully the above description can assist you in choosing a suitable location server for your website.
Definition and Function NIC, Repeater, HUB, Switch, Router, Bridge
The device is a computer network components that need to create a computer network. Components in the intent is a hardware media. In creating a computer network we need to know the hardware devices, such as cable or wifi device, the Network Interface Card (Network Adapter), Ethernet cards, hubs or switches, repeaters, bridges or routers.

I have to say what the previous understanding of computer networks, well here I will tell the hardware of a computer network. Let us remember that 75% of failures that occur in a computer network is caused due to an error of communication media used includes cables and connectors as well as the quality of the installation. Other factors also influenced by technical and environmental concerns. More will be discussed one by one on any hardware device in a computer network.


Definition and Function NIC, Repeater, HUB, Switch, Router, Bridge

Computer networking devices 

1. Cable

Many types of wiring to create a network, however we need to know the standard in use for data communication in computer networks. The types of cables have different abilities. In general there are two types of cables and are often in use in the LAN, which is coaxial and twisted pair (UTP unshielded twisted pair and STP (shielded twisted pair).


Definition and Function NIC, Repeater, HUB, Switch, Router, Bridge

2. Ethernet Card/NIC/Network Interface Card (Network Adapter)

NIC is a card that serves as a bridge from a computer to a computer network. NIC task is to transform the data flow in a parallel computer bus serial data into a form that can be transmitted over the network media.

The workings of Ethernet cards based on the broadcast networks that each node in a network receives every transmission of data that is sent by a node to another. Every Ethernet card has a 48-bit address known as an Ethernet address (MAC address).

This address is planted in any set of network interface card (NIC) that has been recognized by the 'media access control' (MAC) also known as 'hardware address'.

NIC functions:

• Media sender of data to another computer in the network
• Control the flow of data between the computer and wiring systems
• Receiving data sent from another computer through a cable and translates it into bits that is understandable by computers.

3. Hub

Hub is a device that unites network cables from each workstation, server or client. Hub is a network device that works on OSI Layer 1, the Physical Layer. So he just worked no more as a fitting or concentrator alone, and only amplifies the signal in the UTP cable. Know the HUB morbidly MAC Addressing / Physical Addressing and can not sort the data that must be transmitted so that collision can not be avoided from the use of this HUB.

HUB Function:

• Facilitate the addition of removal or addition of workstations
• Increase the distance network (functions as a repeater)
• Provides flexibility to support different interfaces (Ethernet, Token Ring, FDDI)
• Offering feature that fault tolerance (Insulation Damage)
• Provide centralized manegement (collection of information, diagnostic).

4. Repeater

Repeater is a tool that serves to extend the range of a WIFI signal is not covered by the signal from the server in order to capture the WIFI signal. Repeater device must be 2 tool, namely to receive signals from the server (CLIENT) and to deploy again Wifi signal (access point).

Repeater serves to amplify the signal by receiving a signal from a segment of the LAN cable then radiate again with the same power with the original signal to other cable segment. With the existence of these devices can range in Zoom out cable.

Repeater Function:

• To cover areas of weak signal from the server (transmitter)
• To further the signal from the server (transmitter)
• To facilitate access from Servers Wifi signal.

5. Bridge

Bridge network is a network component that is used to extend the network or create a network segment. Bridge network operates in the data link layer of the OSI model. Bridge can also be used to combine two different network media, as well as between media cable Unshielded Twisted-Pair (UTP) cable with fiber optic or two different network architectures.

Its function is nearly equal to the repeater bridge is more flexible but has the intelligence of a repeater. The intent is that the bridge can connect networks using different transmission methods such as the bridge connecting the base band and broad band. Bridge can also be used to connect networks using different cable types or different topologies. This network device can also determine the address of each computer.

Bridge functions:


BRIDGE serves to divide a network into two networks up. BRIDGE set of information between the edge of the network to run regularly.

6. Switch

Switch is a network device that works on OSI Layer 2, the Data Link Layer. he worked as a fitting or concentrator in the network. Switch familiar with MAC addressing so that it can sort out which data packets will be forwarded to an extent.

Function of Switch:

This switch is used as a repeater or amplifier. Serves to connect the UTP cables (Category 5/5e) one computer to another computer. In switches typically are routing, routing itself serves to jump rocks to make a connection with other computers in the LAN.

7. Router

The router is a network device that works on OSI Layer 3, the Network Layer. In this layer has been known to addressing network using the IP Address, and the router plays an important role as a link or successor data packets between two or more network segments.

A router is able to send data or information from one network to another. Have the same functionality as if not smarter bridge with bridge but the development of this device has exceeded the limits of the technology that is expected guidance.

Router Functions:

The router serves as the primary liaison between two or more networks to carry data from one network to another. The difference with the switch is that a switch connecting multiple devices to form a Local Area Network (LAN).

Routers have the ability in the other
Routers can translate information between your LAN and the Internet.
The router will find best alternative path to transmit the data passing through the Internet.
Signaling pathways that regulate efficient and can organize the data that flows between the two protocols.
Can manage data between the network topology
Can regulate the flow of data passing through the fiber optic cable, coaxial cable or twisted pair cable.
Similarly, the computer network devices. I know a lot of flaws in this article but I hope you can understand about the various hardware devices and the network may be a bit of science to the problem of computer network thanks.

8. Wireless

Wireless is a network that does not use cables, is a technology that connects two devices to exchange media data without wires (using radio waves).

How it works:

Data exchanged through the medium of certain light waves (such as infrared technology on the remote TV) or radio waves (such as bluetooth on computer, mobile phone, wifi, etc) with a certain frequency.

9. Modem


Modem stands for modulator demodulator comes from. Modulator is the part that converts the signal information into the signal (carrier) and ready to be delivered, while the demodulator is the part that separates the information signal (which contain data or messages) of the signal (carrier) that received that information be received. Modem is an amalgamation of both, it means the modem is a two-way communication tool.

Each device is a two-way remote communication, typically using a section called "modem", such as VSAT, Microwave Radio, and so forth, but generally the term is better known as the modem hardware is often used for communication on the computer.

How it works:


The data from the computer in the form of digital signals given to the modem to be converted into an analog signal. Analog signals can be transmitted through multiple media such as telephone and radio telecommunications. Upon arrival at the destination modem, analog signals are converted into digital signals and transmitted back to the computer. There are two types of modems are physical, ie an external modem and an internal modem.
Definition, Benefits, and Types Of Computer Networks
Computer network is a system consisting of computers and other devices that are designed to work together in various benefits and purposes, among others, to communicate, access information, receive or provide services. Section called Client and receive services that provide the service called Server. This system is known as a client-server system that has been used in almost all computer network applications.

Definition, Benefits, and Types Of Computer Networks

Definition of computer networks

Computer network is a system consisting of a combination of computing devices that are designed to be able to share resources, communicate and access information of various places between one computer to another computer.

The benefits of computer networks

1 Shared resources/data exchange
2 Simplify communicating/transacting
3 Helps access to information
4 Able to provide quick access to information and up-to-date


Definition, Benefits, and Types Of Computer Networks


The types of computer networks based on the range

1. LAN (Local Area Network)
Local Area Network frequently encountered in the office, campus, or cafe. This network can connect more than two computers in the room close range (limited) to some KM only. These networks typically consist of computers, printers, and other devices.

2. MAN (Metropolitan Area Network)
True to its name, the type of network provides services to a wide area and also has the ability to transfer data at very high speed. Areas may be scope ranges up to 50 KM. This MAN is a network of Local Area Network series that is sized and larger.

3. WAN (Wide Area Network)
This network type of service more broadly than the MAN that can connect an area even other countries. WAN is basically a collection of some of the existing LANs across multiple locations so that it takes a device to connect and the devices that we call the router.

The types of computer networks by function

1 Client - Server
A dedicated computer network as a client and a server, these services can be provided by one or more computers.

2 Peer-to-Peer
Is a computer network that each of its host can be a server or a client simultaneously.

The types of computer networks based on topology

1 Topology Bus
2 Topology Ring
3 Topology Tree
4 Mesh Topology
5. Linear Topology
for explanation please click on the link a variety of network topologies

The types of computer networks based on transmission media

1 Wired Network (Wired Network)
This network uses a cable media in connecting each computer in the network

2 Wireless Network (Wireless Network)
This network does not use the media as a means of connecting wires, but uses electromagnetic waves in each shipment information signal.

Thus understanding of the article, the benefits and the types of computer networks, hopefully can provide benefits.
How to Know the Default IP Address Of Modem or Router
How to Know the Default IP Address Of Modem or Router - Why do you need to know the IP address of your router? You may need to access your router to configure the settings when you create a home network. In fact you really have to do this if you create and set up your own home network. You also may need to find the IP address of your router if you are having network problems.

Each brand has a different modem different Ip address, which will be given when you buy by the provider to the manual or you can search the internet. By typing your router brand and type on the search engine. If you are not familiar with the term network router then you may need to re-learn and hone your skills before reading this article.

Actually this is the basic theory is to know when you want to perform further configuration on the modem or router. Share this article every network technician is arguably less useful, but I just want to share to newbie (beginner) are still in the stage of understanding and learning about the network.

How to Know the Default IP Address Of Modem or Router


For Windows XP users

Follow the instructions below:
1. Click the Start menu and run (select) Run command. Type cmd, and then click OK. as you can see in the picture below.


2. After that, type ipconfig, and then press the ENTER key on the keyboard. And the result will look like the image below. Default Gateway IP address shown in the picture is the default ip address of the modem/router.


For Windows 7 users

Follow the instructions below:
1. Click the Start menu. Type cmd in the Search programs and files, and then click OK. as you can see in the picture below.


With many brands (brand) modem or router on the market especially with a brand new yet familiar. When you as a beginner and want to try to configure modem / router, of course, you have to know the default ip address to be able to log in and log in to the web interface of the device. Here's the link (link) which contains information about the default IP address, username and password of various brands (AZ) and the type of modem or router, please go to here.

Why You Need to Know Default IP Address Of Modem or Router?


There are several factors that cause people to need to know the information, such as:

  1. Want to learn setting up the modem / router with different brand newly purchased
  2. The device is a modem/router reset because there are technical problems
  3. Want to change the SSID name and password for a wifi, hotspot
  4. Adds advanced settings to the modem / router, such as: mac address filter, ddns, virtual servers, URL blocking, port forwarding, etc..

Read previous topic : How to Know the IP Address in Windows 8
How to Know the IP Address in Windows 8
How to Know the IP Address in Windows 8 - If your computer is connected to a network or the Internet, then you will have a computer Internet Protocol address (IP address) on your computer. Nowadays many computers that use the Internet Protocol Version 4 (IPv4), these figures there are four groups separated by periods, for example 172.205.77.65. Are you wondering how to find out the IP Address in Windows 8?

There are two ways to find out the IP address on a Windows computer, namely through the Command (DOS) or go to the Network Connection at control panel.

How to know the IP address Windows 8 via existing network connection icon in the lower right corner (Icon differ between connection via wifi, cable and modem).

How to Know the IP Address in Windows 8


First Method.

1. First, open the Control Panel with a small icon and click Network and Sharing Center icon.



2. Click on the connection being connected.



4. Click "Details".



5. In this window, it would appear that there is an IP address on the computer that we want to know. Now you've seen the IP address you are currently using in the IPv4 Address.



In the example, the IP address is: 192.168.2.110

Second Method - How to Know the IP Address in Windows 8

1. First, open the Command Prompt, type ipconfig/all and press Enter.

2. Then with the command you will see that you are using IPv4 Address appears.

Read previous topic : An Easy Way to Find the IP Address on Windows 7 OS
An Easy Way to Find the IP Address on Windows 7 OS
An Easy Way to Find the IP Address on Windows 7 OS - The IP address that is given on your computer is used to identify computers on the network. IP addresses can be assigned by a router, ISP or manually by the user. There are several ways in which you might want to know where the IP address, for example, you want to use Remote Desktop Connection to access the computers on your network.

Unless you know the name of your computer, and you must know the IP address to connect. I will show the following two methods can be used to help you find the IP address of your computer so that you know how to take the time you need it.

An Easy Way to Find the IP Address on Windows 7 OS


Method 1. Use Network And Sharing Center:

1. Click on the Networking icon located in the Notification Area
2. Click on Open Network and Sharing Center
3. When the "Network and Sharing Center" opens, click on the Local Area Connection for the connection being used.

An Easy Way to Find the IP Address on Windows 7 OS


4. When the Local Area Connection Status window opens, click on the Details button.



5. Your IP address will be listed next to IPv4 address - in this case, 192.168.42.28



6. Click Close when you're done.

Method 2. Using the Command Prompt:



1. Click the Start Menu.
2. Type cmd into the Search Box.
3. Click on cmd listed below under Program
4. When open the Command Prompt window, type ipconfig/all into the command prompt window - usually after the C:Users\Computername> (User Name)
5. Your IP address will be listed next to IPv4 address - in this case, 192.168.42.28.

Read previous topic : How to Find the IP Address in Linux OS