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CMGT/441 Intro. to Information Systems Security Management

Week #4. CMGT/441 Intro. to Information Systems Security Management. Hacking Wireless Networks. Philip Robbins – December 19, 2013. Information Technology University of Phoenix Kapolei Learning Center. 1. Topics Understanding Wireless Technology & Standards Tools

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CMGT/441 Intro. to Information Systems Security Management

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  1. Week #4 CMGT/441 Intro. to Information Systems Security Management Hacking Wireless Networks Philip Robbins – December 19, 2013 Information TechnologyUniversity of Phoenix Kapolei Learning Center 1

  2. Topics • Understanding Wireless Technology & Standards • Tools • Hacking WEP, WPA, WPA2 • Uncovering SSIDs • Bypassing MAC Address Filtering • De-Authentication & Mis-Association • Review Q&A • Quiz #4 Hacking Wireless Networks 2

  3. 3

  4. Understanding Wireless Standards • IEEE 802.11 • IEEE came up the 802.11 standard for wireless ethernet. • OSI Layers 1 & 2 • 79 channels, 2.4 to 2.4835 GHz (USA) • Half Duplex • CSMA/CA (Avoidance) v.s. CSMA/CD (Detection) • Modulation Techniques 4

  5. Understanding Wireless Standards • Center Frequency & Channels for 2.4 GHz 5

  6. Understanding Wireless Standards • 4 Way Handshake 6

  7. Understanding Wireless Standards • 802.11 Standards 7

  8. 8

  9. Tools • Alfa AWUSO36H WiFi Network Adapter 9

  10. Tools • Alfa AWUSO36H WiFi Network Adapter 10

  11. Tools • Alfa AWUSO36H WiFi Network Adapter 30dBm = 1W 11

  12. Tools • Netgear Wireless Router 12

  13. Tools • Netgear Wireless Router TARGET AP 13

  14. Tools • Netgear Wireless Router TARGET 192.168.1.1 14

  15. Tools / Configuration “password” 15

  16. Tools / Configuration Forgot the password for your router? …or your neighbors? 16

  17. Tools / Configuration “password” WEP CONFIGURATION 17

  18. Tools / Configuration 18

  19. Tools / Configuration Authentication? 19

  20. Tools / Configuration WPA CONFIGURATION 20

  21. Tools / Configuration 21

  22. Tools / Configuration “password” 22

  23. Tools Backtrack 5r3 Ubuntu Linux Distribution providing a comprehensive collection of security-related tools for digital forensics and pen testing use. 4… 1 3 2 http://www.backtrack-linux.org/downloads/ 23

  24. Tools 24

  25. Tools 25

  26. Tools 26

  27. Tools 27

  28. Tools AirSnort replacement. 28

  29. Understanding Wireless Technology • Wi-Fi Protected Access (WPA) • Touted as a step up from WEP • Weak passphrases renders the protection inadequate • False sense of security • Network Sniffers • TKIP v.s. AES 29

  30. Cracking WPA 30

  31. Cracking WPA 31

  32. Cracking WPA 32

  33. r Cracking WPA 33

  34. r Cracking WPA 34

  35. Cracking WPA 35

  36. r Cracking WPA 36

  37. r Cracking WPA 37

  38. Cracking WPA 38

  39. r Cracking WPA 39

  40. r Cracking WPA 40

  41. Cracking WPA 41

  42. Cracking WPA 42

  43. Cracking WPA Can take a few hours to go through 1+ million keys… 43

  44. Cracking WPA 44

  45. Cracking WPA 45

  46. Understanding Wireless Technology • Wired Equivalent Privacy (WEP) 46

  47. Understanding Wireless Technology • Wired Equivalent Privacy (WEP) • Confidentiality • Access Control • Data Integrity • In reality, none of these are actually enforced! 47

  48. Understanding Wireless Technology • Wired Equivalent Privacy (WEP) Keystream 40 bits 24 bits 64-bit Keyspace (2^64 keys) 128-bit Keyspace (2^128 keys) Stream Cipher using XOR 48

  49. Understanding Wireless Technology • Wired Equivalent Privacy (WEP) 49

  50. Understanding Wireless Technology • Wired Equivalent Privacy (WEP) 50

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