The wireless network uses any reference to any type of 802.11 network standards which is defined by the IEEE. IEEE is the short form of the Electrical Engineering Institute. The latest model of the 802.11 family 802.11y. Other standards are known 802.16, these are the standards for the next technology known as WiMax name. The growth of Wi-Fi networks is ongoing worldwide this huge growth raises security issues. Wifi is wide organizations and more widely used in the network of the world transfer their sensitive thanks to wireless networking data. Increased use of the wireless network increases the risk of the safety of users or organization potentially. Wireless network carries all types of data that can be normal data or information bits are encrypted or even very sensitive. Wi-Fi security mechanism ensures the integrity level of the right data and privacy, as well as the wired network provides. However, if the proper security measures are not adopted properly intruders can attack the network and can cause great harm not only network but also users' privacy.
There was a time when cables were used to network multiple computers together. Hardware such as routers, hubs, switches, etc. Were necessary for communication between computers, but Wifi brought a change of high technology in computer communications, offering wireless connectivity features. Wireless network keeps very nice and clean. There are many other wireless LAN connectivity features for example high speed. Wifi provides high speed connectivity and faster communication where cables are not feasible to install for example in remote areas. The list of features is long Wifi other important features, including site survey, enterprise-level equipment, scalable systems, VPN compatibility, flexible authentication methods, visitor satisfaction, mobility of end user and easy access through hotspots.
WiFi supports two different modes; What we call infrastructure and the other is ad hoc. Ad hoc wireless connections can be made without central device called router or access point. Most network administrators prefer ad hoc over infrastructure mode. Wi-Fi connected devices using ad hoc mode offers less security against unauthorized users. Devices configured in ad hoc mode can not disable SSID broadcast in contrast to infrastructure mode, which brings hackers into play, and using ad hoc mode is not very difficult to prevail over the wireless network. 802.11g network wife requires communication in ad hoc mode to support 11Mbps bandwidth in contrast to the transfer of 54 Mbps is supported using infrastructure mode. And the Ad hoc mode is considered much slower than Infrastructure mode.
Wireless networks based increase everywhere; each organization is installed if it has not been used before. Chicago has installed huge transmitter large size Wifi flat shape that broadcast wireless radio signals through the city. It provides high-speed Internet connectivity much cheaper. Laptops, computers, PDAs and other devices installed WLAN cards that can access the network and obtain a high-speed connectivity on the road. WLAN users increasingly day by day therefore its hardware manufacturers are manufacturing large scale products. Laptops, PDAs, motherboards latest desktop computer are mostly come with build in wireless LAN cards. If it is not already installed on your laptop, you can buy PCMCI slot wifi card to install for accessing the wireless network. Wifi PCI cards are also widely available. Now, USB Wi-Fi are also available for short range but still works well.
Intelligent routers are available in the market which works to connect different devices to the wireless network. When Internet is available for routers can be configured using its control panel using IP 192.168.1.1. PC can also be attached to routers for more advanced management which routers can not perform. There are so many other wireless technologies that have evolved around time, and Wi-Fi is now taken for granted and the world is now speaking very advanced wireless network and improved known to be WiMax. WiMax beats WiFi technology on many bases which includes the speed at which the data transfer rate, the range to which the connection is made and more. Now we have to see how much time WiMax will take the wireless relay, and the technology will eventually take WiMax relay.
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