By Matthew Gast
As we know via now, instant networks provide many benefits over fastened (or stressed) networks. most suitable on that record is mobility, given that going instant frees you from the tether of an Ethernet cable at a table. yet that's simply the end of the cable-free iceberg. instant networks also are extra versatile, swifter and more straightforward that you can use, and more cost-effective to installation and maintain.
The de facto commonplace for instant networking is the 802.11 protocol, along with wireless (the instant regular referred to as 802.11b) and its quicker cousin, 802.11g. With easy-to-install 802.11 community on hand all over the place you switch, the alternative turns out easy, and plenty of humans dive into instant computing with much less notion and making plans than they'd provide to a stressed out community. yet it's clever to be acquainted with either the services and dangers linked to the 802.11 protocols. And 802.11 instant Networks: The Definitive Guide, second variation is the precise position to start.
This up-to-date version covers every thing you'll ever want to know approximately instant know-how. Designed with the process administrator or critical domestic consumer in brain, it's a no-nonsense advisor for establishing 802.11 on home windows and Linux. one of the wide variety of issues lined are discussions on:
* deployment concerns
* community tracking and function tuning
* instant defense matters
* easy methods to use and choose entry issues
* community tracking necessities
* instant card configuration
* safety concerns precise to instant networks
With instant expertise, the benefits to its clients are certainly ample. businesses now not need to take care of the effort and cost of wiring structures, and families with numerous desktops can stay away from fights over who's on-line. And now, with 802.11 instant Networks: The Definitive Guide, 2d variation, you could combine instant expertise into your present infrastructure with the maximum self belief.
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As we know by way of now, instant networks provide many merits over mounted (or stressed) networks. finest on that record is mobility, due to the fact that going instant frees you from the tether of an Ethernet cable at a table. yet that's simply the end of the cable-free iceberg. instant networks also are extra versatile, speedier and more straightforward that you should use, and more cost-effective to set up and keep.
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Additional resources for 802.11 Wireless Networks: The Definitive Guide (2nd Edition)
The MAC is, however, designed to accommodate stations that leave the network without formally disassociating. Authentication Physical security is a major component of a wired LAN security solution. Network attachment points are limited, often to areas in offices behind perimeter access control devices. Network equipment can be secured in locked wiring closets, and data jacks in offices and cubicles can be connected to the network only when needed. Wireless networks cannot offer the same level of physical security, however, and therefore must depend on additional authentication routines to ensure that users accessing the network are authorized to do so.
Furthermore, wireless networks tend to have fuzzy boundaries. A corporate wireless network may extend outside the building. It is quite possible that a parked car across the street could be receiving the signals from your network. As an experiment on one of my trips to San Francisco, I turned on my laptop to count the number of wireless networks near a major highway outside the city. I found eight without expending any significant effort. A significantly more motivated investigator would undoubtedly have discovered many more networks by using a much more sensitive antenna mounted outside the steel shell of the car.
The PLCP straddles the boundary of the MAC and physical layers, as shown in Figure 2-2. " Figure 2-2. PHY components All this complexity begs the question of how much you actually need to know. As with any technology, the more you know, the better off you will be. 11 implementations hide this complexity. Many of the features of the standard come into their own only when the network is congested, either with a lot of traffic or with a large number of wireless stations. Today's networks tend not to push the limits in either respect.
802.11 Wireless Networks: The Definitive Guide (2nd Edition) by Matthew Gast