How to setup a home wifi network

How do you create a home wifi network?

If you need to ensure that all computers are connected to the Internet and even among themselves to share data – to create a home wifi network, however, it is not difficult.

Today it is very common that households are more computers. The problem occurs when users want to allow all computers are connected to the Internet and even among themselves to share data. Create a home wifi network, however, it is not difficult.

Schematic representation build a home network
Schematic representation of the possible arrangement of the home wifi network (in practice it can be even simpler): 1 – internet (or phone) connection, 2 – modem or. other network devices (eg. router), 3 – WiFi AP (or wireless router for modem) devices 2 and 3 can be combined in a 4 – connected computer cable, 5 – PC connected via WiFi.

The text is divided into three parts:

I only have two computers and any network element (router)
I have / want a router at home is more computers
I want a wireless network (WiFi).
Note: Users who have connected or want to connect via ADSL or cable television, have the choice of a variety of modems, which combines both routing functions as well as WiFi. If you own one of the devices combining modem and WiFi router, skip to the second and third parts.

Home network without a router

Principle assembly: Two computers connect crossed Ethernet cable and adjust the settings of the network cards in computers.

Scenario looks as follows. Do you have two computers (say, one table, one portable). The Internet using a modem or any other connection connected to a desktop computer. You are here and there but you want to connect via laptop. What to do?

What I need

To connect computers and data sharing and the Internet, you need two things: two network cards in your computer, and the Ethernet cable – crossover, rather than direct (in any shop with computer should they?).

Two network cards are needed for this reason: your desktop computer one uses to connect to the Internet, it is already cast a single cable. To “from the computer pulled signal” and led him into the notebook, you need another card. Price Ethernet card and moves around one hundred crowns, so it is not a big investment. The second card to connect a laptop using a crossover cable (included tens of crowns depending on its length).

Windows settings – Workgroup

Computers need to be prepared to connect and share files properly: it would be good that both computers are in the same workgroup. The same group set so that the desktop by right-clicking on My Computer → Properties → Computer Name → Change and type any name (Home, Flat, …). The same must be done on the second computer. (If you do not have a representative of My Computer on your desktop to system properties can be reached via Start → Control Panel → System.)

Setting up network cards using 192.168.ll

We shall now proceed to set up the network cards. The card, which is connected via a desktop computer to the Internet, we ignore. Click Start → Control Panel → Network Connections and select add-in card, which you use to connect with the laptop. Open the properties of the card and on the General tab, double-click Internet Protocol (TCP / IP 192.168.ll). Select Use the following IP address and enter for example. The subnet mask should automatically fill themselves. If not, set

Do the same on the card in a laptop. CAUTION: set but different IP address should be Next, fill in the starting gate – the same IP address that you set on your computer, ie. In our case, and the same address into the first field Use the following DNS server addresses.

Save the settings and return to the main computer. Again, open Network Connections (Start → Control Panel → Network Connections), right-click the network adapter with an active Internet connection (eg. LAN Connection) and select Properties. On the Advanced tab, then set the connection sharing. Then click OK. If you do not connect both computers to work, try to restart both computers.

File sharing

If you wish, you can set within the network and file sharing (or printers). (NB. This procedure also applies when you create a home network using a network element and not only through the direct interconnection of computers.)

It is necessary that the sharing service has been activated. Check the following: Open Network Connections (see above) and select the properties of the network card over which you share a connection. The list, which is eg. Internet Protocol (TCP / IP 192.168.ll) must be item File and Printer Sharing for Microsoft Networks. If there is not, install additional click it to install.

Then select any folder to which you want to share the second computer, click on the right button → Properties → Sharing tab, and adjust as necessary boxes. The same procedure take a notebook (second computer) if you want to share a folder, and they were seen from the main computer.

To the second computer to “see”, open the My Network Places (shortcut is on your desktop, or open it from the menu that you see on the right side of the Windows Explorer (for example, when you open the Network Connections folder).

Caution: It may happen that a mutually computers “see”. Try to open the Start → Run and type ip-second-computers (eg. Now, the folder containing nasdíleným second computer was open. If not, try to run the wizard for creating the site (again on the menu on the right side). The fault may also be poorly configured firewall third party, in this case, examine the settings and try local network firewall rules allow somehow.

Setting up a home wifi network using a router

The principle of preparation: In a device called a router will connect all wiring “major” Ethernet cable from your Internet connections and other cables from computers in the home.

Previous section talks about setting up a home network has been dedicated to the situation when the user is not at home router – “box”, which can connect several devices simultaneously. Solve share an Internet connection over a direct connect computers crossover cable is functional but has some major disadvantages.

The first disadvantage is obviously the need to have two main computer network cards (for the purpose of mere occasional file sharing, backup, etc., One card will suffice – the second is required only in the case when we want to provide a second computer connected to the Internet).

Another disadvantage is that the other computer is dependent on the first: the Internet (192.168.ll) will not connect if the main computer is running. It could be solved while so that the user only uses the Ethernet cable first computer, which connects to the Internet, and connect it to another computer, but this is only if it does not require your ISP unique MAC address of the network card. (Access to the network and assign an IP address to the Internet is on the MAC address of the adapter bound quite often. The second computer with its own AC adapter either to a global network does not connect at all, or if the customer has to wait for the automatic registration of new network card.)

Solution Using the router is far simpler and more efficient

A router is a network element that allows you to connect to the Internet several computers at once, while the connection is not dependent on either one of them. Prices routers are different, ranging from several hundreds up to several thousands (depending on equipment, features, quality, etc.).

In practice, the situation is such that the main cable that connects to the Internet, connect to the router and connect to it other cables from other computers. That’s really all.

Each router has on the back a few slots. They are designated as a WAN (one separate) and LAN (several, in domestic conditions most frequently used four). The rear side of the router, one WAN port and 4 LAN ports are used to connect computers and other devices on the network.

WAN is used to connect the main cable that runs from the Internet connections (ie. Ensuring an Internet connection). As you can deduce a LAN socket used to connect client devices in the home wifi network. This does not have a computer, but need a VoIP phone, network printer, etc.

Before you start connecting your computers to the router, you should check whether there are poorly configured network cards in computers. It is important that in the TCP / IP option was specified Obtain an IP address from the DHCP server automatically. This is done so that the crank according to the following schedule: Start → Control Panel → Network Connections → [right click used network card] → Properties → [General Tab] → Internet Protocol (TCP / IP) → Properties.

Setting up the router with 192.168.ll IP

Sometimes it is quite sufficient to connect the router to the mains, bring him power cables and everything works. Whether it will go so easily for you depends on your provider. If you have not received instructions on how to access the Internet, now in establishing the connection, probably nothing fundamental will not solve it now.

Often, however, the router must be set correspondingly. And in a few steps. Some of them are required, others yes, but we must reiterate that it depends on your individual connection.

Even before you mention some points settings, you need to say how the router set at all. Its configuration via web interface, ie. As if you were moving on the website. (Router must be directly connected to a computer network cable via the LAN jack.)

Into your web browser (Internet Explorer, Firefox, Opera, Chrome, …) to enter the IP address of the router (see manual device where the IP address listed), usually in the form (xxx are unique numbers) and displayed login page. Name and password to get back from the manual (default usually contains the name and password like admin / admin / root, etc., See manual). After correctly entering data, you will see the configuration interface. It is from brand to brand router differs.

Administrator interface router
Administrator interface router brand SMC. Other brands have different settings interface.

Now, the general points of the router’s settings. After connecting the main Ethernet cable to the WAN will mainly deal with the following two points.

MAC address cloning

If your connection is activated on one MAC address (a unique string of characters) of your network card, you will need to clone the MAC address of the card on the router. Router, it will therefore report server, Internet content provider will be her mask. You will avoid the obligation to register a new MAC address. This is where the function cloning located depends on the type of router. It is usually part of the setup wizard.

MAC address cloning
Cloning MAC addresses in the router settings

If you can not read the router’s MAC address and only show you an empty box into which you can write, you need to check it first. Windows bring up the command prompt (Start → Run → [type:] cmd) and enter the command ipconfig / all. In the statement MAC address, you should easily see ( “Physical Address”).

MAC address

Specifications connection type, IP address assignment

Some routers include a wizard (Wizard), who will perform setup. In the first step, it is necessary to select the type of your Internet connection. If the guide does not exist, make WAN settings manually. Selecting the type of connection needs and the allocation of the IP address of the router by the provider.

If your ISP did not give instructions on how to set up the network card in your computer, you probably get an IP address from the server automatically, as you say, and the router (usually by selecting Dynamic IP). And further that you do not have much to solve.

But if you have a static IP address that you once had to set up the network card, enter it in the settings of the router’s WAN (WAN Settings). This also applies to other data, such as DNS server, Network MASK, and default gateway. What has been set for the network card must be set on the WAN router.

At this point, the basic setup ends. Once the router gets the IP address from your provider, you have practically won. Just connect to the LAN ports on other cables for your home device and you can start surfing.

Document sharing settings then proceeds in the same way as described in the first part. It is therefore necessary for all computers on the network set to the same workgroup and select the folders that you share.

Important: For security reasons, as soon as possible to change the factory-set password to access the router settings. Set own, preferably stronger, not primitive.

Wireless home network or how to WiFi

Principle assembly: we take a straight router equipped with WiFi technology and our existing router will connect another device – called. Access Point (AP).

An increasing popularity of notebook computers and other portable devices allowing access to the internet directly calling for us to cover household WiFi signal and could work on the Internet anywhere, not just in one fixed place behind the desk.


To create a WiFi network using either WiFi or devices called routers (MFP) Access Point (AP). Their network connection and commissioning is the same as in the case of an ordinary router: just connect one Ethernet cable directly to an Internet connection or to an existing router.

But if you still going to buy a router and also plan to set up a wireless network, it is pointless to buy a router and access point separately. Straight buy a WiFi router.

Of course, to connect to a WiFi network, you also need the appropriate network adapter, see the instructions how to connect PCs to the Internet.

How to involve WiFi router

Involvement WiFi Router is completely the same as the router (see section 2). This means that the WiFi router to connect to the Internet connection via Ethernet cable (jack WAN) and another cable to connect your computer (LAN jack). And we’ll get into the setting.

(Again, each router has its specific administrator interface for setup. Now, we will not deal in any particular case, we will mention a common practice.)

The following steps coincide with those mentioned in Part 2, we spent setting up the router. So just briefly:

From the manual, we find the IP address of the WiFi router
enter it into your web browser,
Insert the password (see manual)
Set WAN (IP address assignment, depending on your connection type, see Part 2)
clone or manually enter the MAC address of the network card, on which the internet is registered.
Unlike ordinary router, but also we have to deal with your wireless network (Wireless). On the WiFi routers sometimes you must first be activated manually: the configuration interface of the router settings, locate the Wireless Enable (enable) and save.

WiFi setting consists of several steps:

Setting SSID (ie. The name of the network, for example. At home, Paul, My Wifi etc.).
Mode selection (depending on the router. 11b, 11g, 11b / g; a third option not go wrong).
Selecting Channel (Channel) (automatic setting or. Select numbers from 1 to 13).
Security (very important! Hide network encryption, allowing only certain computers, etc.).
Security should not be overlooked at all. If you encrypt WiFi (not protect password) or otherwise do not ensure each in range of your signal will be able to join you. Not only can you get the connection speed, but under your IP address on the Internet can do what he wants. Another danger lies in the fact that such an intruder will be able to easily access files shared across your home network.

Therefore choose one of the options of encryption, and enter the best password (the strength of passwords, encryption type, their strength and additional procedures for network security is discussed in more detail in a separate text How secure WiFi).

Important found on the estate, unsecured wireless network is really easy – and such networks often have also unchanged, ie. The factory-set name (SSID), from which one can conclude that the owner of the WiFi router is too wary and maybe even change the password configuration router. From the default SSID can be password immediately detect because the individual manufacturers for its routers and APs typically use the same factory-set passwords. Intruder you can then reconfigure the router freely and you can also disconnect from the Internet.

How to involve Access Point

If you have an ordinary home router and if you want to join the Access Point, which create a wireless home network, take the Ethernet cable and the AP using it to connect to a LAN socket (as well as other computers).

Now you need to set AP like a router or wireless router. Again, take the manual, Verification IP device in the address bar of your browser and enter your password.

However, it may be a problem that you are wearing the AP just let go. Computer to communicate with Access Point, you need to do is to force manually setting the network card in your computer.

Open Network Connections (Start → Control Panel → Network Connections), select the Network tab, right click and choose Properties. On the General tab, double-click Internet Protocol (TCP / IP) and enter your own IP address. If the Access Point IP address as, your need. AP Type the address into the box Default Gateway. The connection should be established.

Because AP generally offer more features, you may be in its settings will confuse selection of different modes (AP, Client, Bridge, …). For your purposes, but select AP mode. Other settings are the same as for a WiFi router (see above). Again, do not forget the security!

How do I connect to WiFi

First, make sure you have enabled wireless network card (Start → Control Panel → Network).

Wireless network administrator would then have to show you the available networks (if you hear yourself in the Windows notification area – for hours – double-click on the icon for wireless connection cards). In the list you will see all visible networks in the area, among them that his (below the selected SSID). Connect to it, you will be prompted to enter the password and after successful authentication can start surfing.




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