Posts Tagged ‘Wireless Networking’

Maybe You Already Have Wireless and Don’t Know It?

April 8th, 2010



More and more laptops and desktop computers are coming pre-equipped with wireless networking devices — it’s so cheap that they might as well put it in, to have another thing to list in the system specifications. It is easy to tell if a desktop computer has wireless enabled. Have a look at the rear panel for a small antenna. If its there then you have wireless. Laptops a much more difficult to diagnose.

If you’re anything like me, though, you probably don’t even know how much memory your computers have, never mind whether any of them came wireless-enabled. When you don’t know what wireless networking is, it’s easy to ignore it in a computer’s specifications, and never take the time to set it up and get it working. Here are some things to look for if you want to check your computer’s wireless capabilities.

Intel Centrino

If your laptop came with something called ‘Intel Centrino mobile technology’, then it’s good news for you! Computer manufacturers seem a little bad at explaining what this technology is or does, but it basically means that your laptop has wireless networking built right in, without you needing to do a thing. It is a marketing name for a combination of the Intel Pentium M processor and Intel’s Pro/Wireless card.

Your computer should have a ‘Centrino’ sticker on it somewhere if it is Centrino enabled. If you think you might have taken the sticker off, you can check the name of your processor by right clicking the My Computer icon on your desktop (or in the Start Menu) and choosing Properties from the menu that appears. Take a look at what it says after the word ‘Computer’ on this screen.

If you’re interested, Centrino technology also increases battery life and allows computers to be smaller. Don’t worry, though, if you didn’t buy a Centrino laptop — as long as your laptop has a free card slot, installing wireless on it will be no trouble.

Desktop Computers

If you’re not sure whether your desktop computer has a wireless connection, the easiest thing to do is to turn it around and look at it. If a wireless connection is present, you should usually be able to see a small aerial sticking out of the back of the computer, towards the bottom.

If there’s nothing there, then it’s still possible that you have a wireless device in the computer, especially if you bought it recently and you think you do. It’s not a good idea to try to open up your computer just to check something, though, so you should probably try and figure it out using Windows.

Checking in Windows

Instead of fiddling around with your computer hardware to see what you’ve got, you can check easily enough using Windows’ Device Manager. To use it, right click My Computer, and choose Manage from that menu. Now click Device Manager.

You should see a list of all the different kinds of things you can install on your computer. Take a look under ‘Network adapters’. Ignore anything that says ‘10/100′ or ‘Ethernet’ — they’re normal network connections, but not wireless ones. If there’s anything else there, it could be a wireless device.

If you think you have a wireless device, but it has a yellow warning sign next to its name in the Device Manager, you should take a look at it to see what’s wrong by double clicking its name. Windows should tell you why the device is not working at the moment, and may suggest that you go through its troubleshooter program. Do that before you do anything else.

If it turns out to be a driver problem, you should insert the drivers CD that came with your computer. Of course, as is always the way, you probably won’t be able to find that CD — but don’t worry, you should be able to find drivers online. First, you should look on the website of the computer’s manufacturer, and then you should try searching for the name that the wireless device had in Device Manager.

Of course, you might find after all this that you don’t have a wireless device after all. Hard luck. It’s better to figure that out now than to buy wireless equipment and then realise you had some already, though, isn’t it? Of course, even if you did find a wireless device in one of your computers, you probably still need more. Don’t worry either way — they’re getting cheaper all the time!

By: Tony Fitz

Home Networking Secrets – How To Do It the Easy Way

December 30th, 2009

Today’s secret: Why big stores love home networks.

More and more of us are adding devices to our home networks – an extra PC for the kids, Xbox or Wii, a media sever to store all our music and photos.  The ability to share music, photos and videos across all the PCs in your house has never been easier.

Yet with all this growth, a recent survey conducted by ABI Research showed one in three consumers reported difficulty in setting up and maintaining their home network.  25% of all wireless devices are returned to the store simply because it was too hard to setup and not a defective product. This notion is further enforced by Best Buy’s Geek Squad founder Robert Stephens who acknowledged that the complexity of installing a wireless network is evidenced by the fact that return rates on wireless networking devices drop to nearly zero when his installers do it. Really there are a lot of great network products out there, but unfortunately they do not always do a good job of explaining very simple to set up.

This is one of the reasons that big stores love home networks, it seems complex and hard to set up. Its easy to get frustrated with it. So if you return a wireless router to the store how hard do they have to sell you on letting them ease your frustrations by having them install it for you.

Another reason they love home networks is the time it can take to set up a network.  Usually there’s software to install, the PC will need a reboot, add security passwords and need another reboot and we all know how long that can take.  So if you have two PCs on your network the time needed is doubled, want to add a printer you can all use, time doubles again as more software is added to each pc and yet more reboots.

Final reason is maintenance.  Want to add a new pc or printer they will gladly come out and spend more time adding the new device.  If the network stops working do you know where to start troubleshooting?

Truth is home and small business networking is not that difficult if you have some technical knowledge. Setting up times and maintenance can be greatly reduced with the right software. With great software you do not even need the technical knowledge to get a multi-device network running.

Whenever I go to someones home to set up a network I show them them Network Magic. This software is by Cisco, one of the leading companies in business high tech networking. I explain how by using this software their network can be set up quicker, be more secure and easier to maintain. » Read more: Home Networking Secrets – How To Do It the Easy Way

Wireless Networking

December 28th, 2009

Start wireless networking with making sure that your computer has the right device for wireless internet connections. Most of the new models out in the market today have built-in wireless transmitters but older models need a wireless adapter plugged into a USB port or PC card slot to make it Wi-Fi capable. New wireless adapter models are compatible with the different 802.11 standards.

Upon installation of the wireless adapter, drivers should be installed to enable the computer or laptop to detect existing Wi-Fi networks in the vicinity and then be prompt for connection. Older computers may need a special program to detect and connect to existing Wi-Fi networks.

An existing home network can be converted into a wireless networking access point. On the other hand, if there is wireless networking unavailable for the computers or if the user wants to switch from an Ethernet network to a wireless one, a wireless router with a wireless access point, firewall, Ethernet hub and a port to the DSL modem can be used.

Using a wireless router, you can either connect computers and printers in your network using Ethernet cables or wireless signals. Wireless routers typically provide 30 meter coverage in all directions. Of course, walls and doors can affect the router’s coverage area. To extend the coverage or range of the wireless router, you can use repeaters or extenders.

Default Settings and User Options

The router will run at its default settings upon activation. The user, however, can change these settings depending on his or her preferences using the web interface. The settings that the user can change are the default setting of the service set identifier or SSID which is the manufacturer’s name, the default channel of the router which is channel 6 most of the time and used to minimize or eliminate interference with a neighbours wireless router operating at the same channel, and the router’s security options which has a username and password option.

Wireless Networking Security Options

The last setting is important to people who would like to limit access to wireless networking. For this, you can use any of the three wireless network security options available. WEP (Wired Equivalent Privacy) for example, uses a 64- or 124-bit encryption method that prompts user to provide a password prior to access. The WPA or the Wi-Fi Protected Access on the other hand is an upgrade of WEP included in the 802.11i protocol.

WPA differs from WEP for instead of the bit encryption method, it utilizes TKIP (Temporal Key Integrity Protocol) encryption to safeguard the network data. As with WEP, all users need to provide a password in order to log in to the network. Finally, the Media Access Control or the MAC eliminates the need for passwords and usernames in providing wireless network security. The MAC utilizes the unique MAC address of every computer to determine who is or who is not allowed into the network.




By: Greg Dempsey