7 * This Network works in the following way: -Data wireless adapter radio signal antenna wireless router signals decoding Ethernet connection information to the internet or other device.
8 Continued……. The process also goes in reverse : Information router radio signal antenna adapter data used by the computer.
9 Security Security is an important part of home wireless network. Some precautions or methods should be used to keep the network private. - WEP - WPA - MAC
10 Wired Equivalency Privacy (WEP): –WEP key : numerical password. –Must be known to access the network. WIFI Protected Access (WPA): –Development of WEP. –Part of 802.11i security protocol. –Like WEP, it uses a password.
11 Media Access Control (MAC): - very secure. –It uses different technology ( Address Filtering). –No use of password. –It uses computer’s physical hardware. –MAC addresses should be matched in order to access the network. - MAC addresses should be added to the list for new computers.
14 The beginning of wireless communication Gugliemo Marconi – 1896 His goal? A key to the gate
15 Beginning of Wireless LANs Dr. Norman Abramson – 1970s Major events since:- –1980: first modems with 9600 bit/s –1991: Wireless LAN workshop (why/results?) –1990s: wireless hardware drop (benefits?)
16 ٍ Standards and Protocols Why standardization? IEEE 1990: 802.11 family