WLAN cards ) and locate in WLAN range can share s directly without the use of an access point , typically within the range 500 feet . Fortunately , PCs and laptop computers usually support ad hoc mode . However , this method posses disadvantages since any hackers that has the same WLAN settings can obtain unauthorized access to clients (Cisco , 2006 ) 2 .5 Wireless LAN As elaborated in previous section , the use of WLAN is beneficial due to flexibility of users . In addition , Microsoft (2004...











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