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Chapter 13 802.11 Network Security Architecture

Certified Wireless Network Administrator (CWNA) PW0-105. Chapter 13 802.11 Network Security Architecture. Chapter 13 Overview. 802.11 Security Basics Legacy 802.11 Security Robust Security Traffic Segmentation Infrastructure Security VPN Wireless Security. 2.

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Chapter 13 802.11 Network Security Architecture

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  1. Certified Wireless Network Administrator (CWNA) PW0-105 Chapter 13 802.11 Network Security Architecture

  2. Chapter 13 Overview • 802.11 Security Basics • Legacy 802.11 Security • Robust Security • Traffic Segmentation • Infrastructure Security • VPN Wireless Security 2 Certified Wireless Network Administrator: CWNA – PW0-105

  3. 802.11 Security Basics • Data privacy • AAASegmentation • Monitoring • Policy 3 Certified Wireless Network Administrator: CWNA – PW0-105

  4. Data Privacy • About the protection of data and the prevention of unauthorized access to it • Uses encryption • RC4 • AES • Exercise 13.1 4 Certified Wireless Network Administrator: CWNA – PW0-105

  5. AAA • Authentication • Who are you? • What are you? • Authorization • What can you do? • Accounting • What did you do? 5 Certified Wireless Network Administrator: CWNA – PW0-105

  6. Segmentation • LANs • WANs • VLANs 6 Certified Wireless Network Administrator: CWNA – PW0-105

  7. Policy • Defines how computer systems must be implemented • Specific WiFi policies must be created • Traditional wired policies are not sufficient 7 Certified Wireless Network Administrator: CWNA – PW0-105

  8. Legacy 802.11 Security • Legacy authentication • Open System • Shared Key • Static WEP encryption • MAC filters • SSID cloaking or hiding 8 Certified Wireless Network Administrator: CWNA – PW0-105

  9. WEP Key and IV 9 Certified Wireless Network Administrator: CWNA – PW0-105

  10. Robust Security vs. Legacy Security 10 Certified Wireless Network Administrator: CWNA – PW0-105

  11. Robust Security Network (RSN) • 802.11-2007, originally 802.11i, define an RSN • STAs must use the 4-way handshake • STAs must use CCMP or TKIP • Pre-Shared Key (PSK) • Proprietary PSK • Dynamic PSK and Private PSK are examples • 802.1X/EAP 11 Certified Wireless Network Administrator: CWNA – PW0-105

  12. 802.1X Comparison 12 Certified Wireless Network Administrator: CWNA – PW0-105

  13. WLAN Bridging and 802.1X 13 Certified Wireless Network Administrator: CWNA – PW0-105

  14. 802.1X/EAP Architecture and Process 14 Certified Wireless Network Administrator: CWNA – PW0-105

  15. EAP Types 15 Certified Wireless Network Administrator: CWNA – PW0-105

  16. Traffic Segmentation • VLANs • Guest • Voice • Data • RBAC 16 Certified Wireless Network Administrator: CWNA – PW0-105

  17. Wireless VLANs 17 Certified Wireless Network Administrator: CWNA – PW0-105

  18. Infrastructure Security 18 Certified Wireless Network Administrator: CWNA – PW0-105

  19. VPN Wireless Security (Hotspot) 19 Certified Wireless Network Administrator: CWNA – PW0-105

  20. VPN Wireless Security (Site-to-Site) 20 Certified Wireless Network Administrator: CWNA – PW0-105

  21. Chapter 13 Summary • 802.11 Security Basics • Legacy 802.11 Security • Robust Security • Traffic Segmentation • Infrastructure Security • VPN Wireless Security 21 Certified Wireless Network Administrator: CWNA – PW0-105

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