Wireless

WIRELESS LAN’S

A Wireless LAN is a wireless local area network that connects two or more computers or devices without using wires. It is commonly called as WLAN.

It was developed by IEEE 802.11(Institute of electrical and electronic engineering). 802.11standards use the

Ethernet protocol and CSMA (carrier sense multiple access with collision avoidance) for path sharing.

WLAN devices allow users to move their laptops from one place to another place within their offices without the need for wires and without losing network connectivity.

WIRELESS LAN’S:

Wireless LAN’s allow greater flexibility and portability than the traditional wired LAN, that the wired LAN requires a wire to connect a user’s computer to a network

But the WLAN connects computer to a network using an access point devices. This access point communicates with devices equipped with wireless network adaptors and it connects to a wired Ethernet LAN. This access point

Devices have a coverage area up to 300 feet (approximately 100 meters).

 WIRELESS LAN COMPONENTS:

A Wireless LAN comprises two types of equipments.

1. A wireless station

2. Access point

A wireless stations are equipped with wireless networks interface card (NIC).Access points are base station for the wireless networks, they transmit and receive radio frequency to communicate with wireless devices. Wireless clients can be mobile device such as laptops, personal digital assistants, I phones and fixed devices such as desktops and workstation that are equipped with the wireless network interface (NIC).

Nowadays WLAN are becoming popular in more wide range of business customers.

For example:

Hospitals, Universities, Hotels, retail shops are using this wireless technology to conduct their daily business operations.

BENEFITS:

Wireless LAN’s offer five primary benefits

USER MOBILITY:

Users can access files, network resources and internet without physically connected network to the wires.

RAPID INSTALLATION:

The installation time is very less because the network connection can be made without adding wires, or pulling it through walls or ceiling, or making modification to the infrastructure cable plant.

REDUCED COSTS:



The initial investment of wireless LAN is little higher than the wired LAN, but there is no need of installation charges and the wiring charges.

SCALABILITY:

      WLAN network topologies can easily be configured to meet specific application and installation needs and to scale from small peer to peer network to very large enterprise network that enable roaming over a broad area.

FLEXIBILITY:

Users can quickly install a small WLAN for temporary needs such as a conference, tradeshow or in the meetings. It is flexible so we can take WLAN in our necessary locations.

So Wireless LAN’s is best to fit your computers or devices to communicate over a network.

 

 

 

                     



By: ramya

About the Author:

In recent years office printing has evolved, with many businesses opting to replace a number of their individual desktop printers with an all in one multifunctional device. This has partially been made possible by the introduction of WiFi technology into these devices. In many offices, especially when they are open-plan, space can be precious so finding a position for a large photocopier can be difficult. Now that office machines, such as photocopiers and multifunctional devices, are often capable of storing documents electronically, emailing and faxing it has become vital in most businesses for them to be connected to the office network.Without being WiFi capable these machines would have to be placed next to a network connection, which are usually found in the busiest part of the office. WiFi enabled devices can utilise any spare office space and can be placed in the most central position so that they are convenient for all users, making it far easier for businesses to consolidate their office machines.

Employees who spend time out of the office and store documents on laptops can find particular benefit in having WiFi enabled printing devices. When returning to the office and needing to print out any documents, a connection can be made from the laptop to the printing device without needing to find a printer cable or to transfer the documents over to a computer which is connected to the device. This method of printing can be far more convenient and less time consuming, which is especially useful for people who are only in the office for a short while.

With most offices already having wireless networks connecting their computers, it can be easy to incorporate a WiFi enabled printer or photocopier into this network. It is now possible to consolidate desktop printers into an all in one device, which can be placed in the most convenient place, without having to spend any money on cables to connect the device to all the computers. With more and more printers and photocopiers incorporating WiFi technology it could mean that they could be positioned anywhere and used by anyone who needs them, whether it be in offices or in public spaces.



By: Jennifer Chilton

About the Author:

Wi-fi is a wireless data networking protocol, which allows for PCs and laptops to access the internet, within a given area or “hotspot”, via a high frequency wireless local area network (WLAN). The term Wi-Fi was coined by the Wireless Ethernet Compatibility Alliance (WECA) as another name for IEEE 802.11b networking standard. WECA is still involved in certifying new wireless modems in order to verify that they are fully compatible with the standard



By: Jeremy Maddock

About the Author:

Scarface0664 asked:

Hacking, WLAN, Internet

horscht asked:


I am about to install yellodog linux 5 (YDL) on my PS3. I am interested in using the WLAN adaptor of the playstation to avoid more cables in my living room.

wonderer4711 asked:

a view shots of a selfmade 2,4Ghz WLAN Helix Antenna

Requirements:



A friend with a PSP

One or two copies of a multiplayer-enabled game



 

Do I need extra cables or an internet connection?

The great thing about the PSP is that you can connect your PSP (up to 16, game depending) to another PSP wirelessly without the need of an internet connection. So gone are the days that you had to carry an extra cable to connect two consoles. The PSP has the ability to connect to another PSP and form their own private PSP network and so opening up the doors to wi-fi gaming heaven.

How do I setup my PSP wi-fi access?

Flick the switch of the WLAN on the top side of the PSP Slim, or on the left if you have an older PSP model. That is it easy as one, two, three.

What is the range of PSP Wi-Fi?

The rang is up to 150 feet, but I would recommend as close by as you can, because the further away the weaker the signal.

What PSP games offer multiplayer mode 

The majority of PSP games have a multiplayer mode, but if you are in doubt check the games info.

What are the best PSP multiplayer games?

Well, I came up with a top 10 list PSP games which have a multiplayer mode.



Syphone Filter: Dark Miror

SOCOM US Navy: SEALs Fireteam Bravo 2

Tekken: Dark Ressurection

Virtua Tennis: World Tour

Metal Gear Solid: Portable Ops

Killzone: Liberation

Pro Evo 6

SWAT: Target Liberty

Worms: Open Warfare 2

Power Stone Collection



 

Where Can I Download These Games For Free?

Well, we have reviewed the best downloadsites for your PSP here: Download PSP Games

 



By: Dion Laros

About the Author:

For long, free services like Skype have been associated with Voice over Internet Protocol (VoIP) — i.e., using your computer and a broadband internet line to make long-distance phone calls. Basically, what you used to pay for before came to you for free.

However, the main problem with such a service was, you had to be connected to a computer to place the call, and be right there for the duration of the call. Sort of like the ‘landline’ — you could move around, but you couldn’t move away. So VoIP, despite its usefulness, was not portable.

That was until companies like Netgear, UTStarcom, ZyXEL and Linksys decided to do something about it — They built WiFi phones.

With WiFi phones, VoIP could go portable. So no more computers required, and you could move around (or away) while you talk, and still be ‘online’.

WiFi phones are like cell phones. But instead of using regular carriers like Cingular or Nextel, they use Internet-friendly WiFi networks, and open protocols like SIP, to place your calls.

Unlike a regular phone that transmits voice in the analog form (as is, without converting them), WiFi phones convert your voice into a digital format and transmit them as packets of binary data to a wireless receiver. The receiver then passes the information over the Internet to the call processor. Throughout the process, IP addresses are used in the place of phone numbers to initiate, connect and end the call. These IP addresses act as direction maps for your call — just like when you log on to the Internet and type a web address go to a site.

The concept of WiFi phones (and the associated technology) is still quite new. The preference so far has been to use wifi-enabled laptops and smartphones to log on to a local “hotspot” — maybe at a Starbucks or a city mall — and surf the Internet wirelessly. Using a similar system to make voice calls at lower than market rates (even free) in a city-wide zone, is still in a nascent stage.

But the fact remains that WiFi is a simple, efficient and economical technology. It’s also downright brilliant. Why? Because it has strong roots in digital convergence — the idea of combining as one many of the functions, protocols, services and standards that baffle us, and offering a core solution for simplifying technology itself, a need echoed by today’s multitasking world. And as this technology grows and its pluses sink in, it’s only a matter of time before WiFi becomes the de facto choice and centerpiece of mobile communication.



By: Nat Jay

About the Author:

Did you know you can use your PSP to surf on the internet for free with wireless Internet? Most PSP fanatics do not even take advantage of this but it is quite easy once you know how to setup your PSP! Continue to read as I will show you the way to do it.

There are several basic things you must know before starting to use your PSP to surf the internet. Internet on psp needs the source obviously, it could be from your office, your home, or fast food restaurant or cafe. Wipeout Pure software is important to get internet on PSP.

Ready to learn how to get Internet on PSP?

Internet on PSP - Step 1

Switch on your PSP, go to system menu and then enter “Network Settings”. Go to “Infrastructure Mode” and select a connection to edit.

Your PSP has probably a home connection readily setup, select one connection to setup but leave the profile name as it is, Do not alter the setting of the WLAN.

Internet on PSP - Step2

Go to the address setting and change the option to custom, remember to not alter the IP Address setting, just leave it as Automatic.

Go to the DNS setting and set it to manual. This time changing the setting is needed.You can try to put the most popular one, the gateway in Endgadget, enter the numbers “208.42.28.17″ for Primary DNS IP, as for the secondary DNS IP, put 0.0.0.0. It it won’t work, do a quick serach on google, you will find a lot of gateways that you can use.

Internet on PSP - Step 3

Select the proxy server setting and change to “do not use”, afterwards press x to save the setting.

Internet on PSP - Step 4

Start the Wipeout Pure as normal. If you want to test it go to the download menu, use the connection you have just set.

When you have internet on your PSP, what the next thing you would do? play online game or watch Video on Youtube with your PSP?

You can download with no limit all the online games and Software for you PSP on PSP download sites, visit Get Internet on PSP - Surf the Internet on your PSP Wherever You Are to discover what benefits and features you can get.



By: Leonard Jones

About the Author:

How to configure a router

Original version by Lukasz Sawicki

Proper configuration of the router is the precondition for networking and Internet access. Let’s begin with the description of its functions. In general, router is a network device that is a communication node between the sending and receiving endpoint. The control of the traffic is called routing. Router creates a routing table or routing information base (RIB) that stores the best routes to certain network destinations, or the “routing metrics” associated with those routes, and the path to the next hop router. It allows to direct the packets to specified destinations. The routing process means interaction of at least two subnets.

The immense growth of the number of Internet users is the reason of remedial measures that overcome the limits of Ipv4 (Internet Protocol version 4). One of the measures is routing. It means linking of internal network with a pool of “private” IP addresses to the public network. Simply the router uses less (external) IP addresses than the number of supported computers in the local network. The diagram below depicts the typical solution.



Example of routing with NAT function

Router configuration example is based on the

TP-Link TL-WR542G device

Notice: TP-Link TL-WR542G N2950 does not support ADSL service (it is not equipped with ADSL modem).

Router connects two or more logical subnets, e.g. external network with Internet access (WAN) with local network (LAN), making a bridge for information exchange. Without proper configuration the connection will be impossible. In most cases, router acts as a specialized computer (replacing a standard computer) working in external network, with software and hardware tailored to the tasks of routing and forwarding. It allows to create internal (local) network.

In this case, the computer configuration involves:



taking down all settings of the NIC (working in external network),



IP address

Subnet mask

Default gateway

Preferred DNS server





changing the way of address assignment to dynamic (DHCP), or setting fixed IP address from the router’s range,

connecting the computer with LAN port of the router.





Example of assigning a fixed IP address for TCP/IP protocol. This option is used when the router does not assign addresses automatically. At this stage there is no need to enter default gateway nor DNS servers parameters.

After restarting the computer, there is possibility of connecting with the router (via Internet browser). The logged in user (the initial user name and password are given in the user’s manual) can configure the router.



The login window

The easiest way of configuring the router is use of “Quick Setup” option.



The first dialog box

To begin configuration we should choose Next.

It is important to select adequate kind of WAN connection type:

There are three possibilities:



PPPoE - in the case of network using PPPoE protocol (rather untypical),

Dynamic IP - the router will get IP address automatically (the most common option),

Static IP - in the case of fixed IP address.





Choice of WAN connection type

For Static IP option there are needed the settings of the NIC (to be entered). In the case of Dynamic IP this box will be omitted:

In this box there are entered adequate settings (previously taken down or given by the ISP)

After configuring WAN port parameters the next step is setup of Access Point:

Planning to use access point, it is needed:



to select suitable channel,

to set SSID,

to choose the region (country),

to set data encryption and cryptographic keys (in the tab Wireless >> Wireless Settings).



……

[This is not complete article. For full version go to DIPOL WLAN, TV-SAT, CCTV web site.]



By: Michal Lepiarz

About the Author: