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1. WIRELESS FIDELITY Wi-Fi NirajsinghChauhan B.Tech CS MAIIT

2. CONTENTS Wi-Fi Security

3. INTRODUCTION Wi-Fi is a WLAN Uses radio frequency to transmit data through the air Connect computers to each other to the internet and to the wired network

5. Operates at 5 GHz

6. 15-20 Mbps (Actual speed)

7. 50-75 feet range

8. More expensive

9. Not compatible with 802.11b

10. In late 1999

11. Operates at 2.4GHz

12. 4-6 Mbps (Actual speed)

13. 100 -150 feet range

14. Most popular, Least Expensive

15. Interference from mobile phones and Bluetooth devices which can reduce the transmission speed

16. In 2003

17. Combine the feature of both standards (a,b)

18. 100-150 feet range

19. 54 Mbps Speed

20. 2.4 GHz radio frequencies

22. Wi-Fi cards – Accept the wireless signal and relay information. They can be internal and external.

24. Peer-to-peer Technology (Adhoc mode)

26. BSA-RF coverage provided by an AP.

27. ESA-It consists of 2 or more BSA.

29. Client devices within a cell can communicate directly with each other.

32. A Wi-Fi hotspot is created by installing an access point to an internet connection.

33. Wi-Fi enabled device encounters a hotspot, the device can then connect to that network wirelessly.

35. Encryption

38. Change Default Passwords

39. Wired Equivalent Privacy (WEP)

40. Crackers

42. Small Businesses or SOHO

43. Large Corporations & Campuses

44. Health Care

45. Wireless ISP (WISP)

47. Ease of Installation

48. Flexibility

49. Cost

50. Reliability

51. Security

52. Roaming

54. Degradation in performance

55. High power consumption

57. >>Any Queries<<