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Wireless LAN Deployment Best Practices

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Michael Boman
Michael Boman

Wireless LAN Deployment Best Practices presentation for ISACA Singapore 2005/08/19

TechnologieBusiness
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Wireless LAN Deployment Best Practices Michael Boman IT Security Researcher & Developer http://proxy.11a.nu | proxy@11a.nu
What We Will Cover ,[object Object],[object Object],[object Object],[object Object],[object Object]
Wireless Basics ,[object Object],[object Object],[object Object],[object Object]
Terminology ,[object Object],[object Object],[object Object],[object Object],[object Object]
The different 802.11 Standards ,[object Object],[object Object],[object Object],[object Object]
The different 802.11 Standards ,[object Object],[object Object],[object Object],[object Object]
The different 802.11 Standards ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],The different 802.11 Standards
The different 802.11 Standards ,[object Object],[object Object],[object Object]
Concepts of the 802.11 MAC layer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Concepts of the 802.11 MAC layer ,[object Object],[object Object],[object Object],[object Object],[object Object]
Ad Hoc Networks ,[object Object],[object Object],[object Object]
Ad Hoc mode or IBSS configuration CELL Wireless Laptop Computers
Infrastructure Networks ,[object Object],[object Object],[object Object],[object Object]
Infrastructure mode or BSS configuration Wireless Access Point Wireless Laptop Computer Wireless Laptop Computer Internal LAN
[object Object]
Antenna Signal ,[object Object],[object Object],[object Object],[object Object]
Antenna Signal ,[object Object],[object Object]
802.11 Design Flaws ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SSID ,[object Object],[object Object],[object Object]
SSID
SSID
Access Control ,[object Object],[object Object],[object Object],[object Object]
Wired Equivalent Privacy (WEP) ,[object Object],[object Object],[object Object],[object Object],[object Object]
Wired Equivalent Privacy (WEP) ,[object Object],[object Object],[object Object],[object Object]
Wi-Fi Protected Access (WPA) ,[object Object],[object Object],[object Object]
Extensible Authentication Protocol (EAP) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
User Network Access Controls ,[object Object],[object Object],[object Object]
Business Risks of Wireless LANs ,[object Object],[object Object],[object Object],[object Object],[object Object]
Security Risks INTRODUCED by Wireless Technology ,[object Object],[object Object],Computerworld survey estimate at least 30 percent of businesses have rogue wireless LANs.
Rogue Device Threat ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],Rogue Access Points
Denial of Service ,[object Object],[object Object],[object Object]
Security Risks of Wireless LANs ,[object Object],[object Object],[object Object],[object Object],[object Object]
Wireless is insecure by its very nature The point?
[object Object]
Hardware Wireless Card and Antenna
Hardware ,[object Object]
Software ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Stumbling Tools ,[object Object]
Sniffing Tools ,[object Object]
Handheld Tools ,[object Object]
Hacking Tools ,[object Object]
Attacks against Wireless Networks
Leeching access ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Wireless Auto Configuration Algorithm ,[object Object],[object Object]
Wireless Auto Configuration Algorithm ,[object Object]
Wireless Auto Configuration Algorithm ,[object Object],[object Object],[object Object],[object Object]
Wireless Auto Configuration Algorithm ,[object Object],[object Object]
Wireless Auto Configuration Algorithm ,[object Object],[object Object],[object Object]
Attacking Wireless Auto Configuration ,[object Object],[object Object],[object Object]
Attacking Wireless Auto Configuration ,[object Object]
Attacking Wireless Auto Configuration ,[object Object],[object Object],[object Object]
Wireless Auto Configuration Attacks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
A Tool to Automate the Attack ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Creating An ALL SSIDs Network ,[object Object],[object Object],[object Object],[object Object]
Creating a FishNet ,[object Object],[object Object],[object Object],[object Object]
FishNet Services ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Client-Side Application Vulnerabilities ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Beating access control ,[object Object],[object Object],[object Object],[object Object],[object Object]
Denial of service ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Session hijacking ,[object Object],[object Object],[object Object]
Man in the middle ,[object Object],[object Object],[object Object],[object Object]
Home Users Wireless Access Point Hack-me Hack-me
Corporate Networks Accounting Payroll Wireless Access Point Wireless Hacker Switch
Corporate Networks Accounting Payroll Wireless Access Point Wireless Hacker Switch
[object Object],[object Object],[object Object],[object Object],[object Object],Corporate Networks
Telecommuters
[object Object]
SEC- -Y U - R - IT If not you, who? If not now, when? The key to security awareness is embedded in the word security…
Countermeasures ,[object Object],[object Object],[object Object],[object Object]
Prevention ,[object Object],[object Object],[object Object],[object Object],[object Object]
Prevention ,[object Object],[object Object],[object Object],[object Object],[object Object]
Prevention ,[object Object],[object Object],[object Object]
Identification ,[object Object],[object Object],[object Object],[object Object]
Response ,[object Object],[object Object],[object Object]
Countermeasures - Antenna Signal ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Countermeasures - SSID ,[object Object],[object Object],[object Object]
Countermeasures - MAC ACL ,[object Object],[object Object],[object Object]
Countermeasures - WEP ,[object Object],[object Object],[object Object]
Countermeasures - User Access Control ,[object Object],[object Object],[object Object]
Countermeasures - Access Point (AP) ,[object Object],[object Object],[object Object],[object Object]
Countermeasures - DOS ,[object Object],[object Object],[object Object],[object Object]
Wireless can be Secure ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Putting it all together Wireless Laptop Computer VPN Gateway Authentication Server Internal LAN With personal Firewall & VPN Software WEP MAC Filtering Unique SSID (If Broadcasting is not disabled) IP Protocol 50,51 UDP port 500 Wireless Access Point Firewall IDS WIDS WIDS
[object Object]

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Wireless LAN Deployment Best Practices

  • 1. Wireless LAN Deployment Best Practices Michael Boman IT Security Researcher & Developer http://proxy.11a.nu | proxy@11a.nu
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  • 13. Ad Hoc mode or IBSS configuration CELL Wireless Laptop Computers
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  • 15. Infrastructure mode or BSS configuration Wireless Access Point Wireless Laptop Computer Wireless Laptop Computer Internal LAN
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  • 35. Wireless is insecure by its very nature The point?
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  • 37. Hardware Wireless Card and Antenna
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  • 64. Home Users Wireless Access Point Hack-me Hack-me
  • 65. Corporate Networks Accounting Payroll Wireless Access Point Wireless Hacker Switch
  • 66. Corporate Networks Accounting Payroll Wireless Access Point Wireless Hacker Switch
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  • 70. SEC- -Y U - R - IT If not you, who? If not now, when? The key to security awareness is embedded in the word security…
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  • 85. Putting it all together Wireless Laptop Computer VPN Gateway Authentication Server Internal LAN With personal Firewall & VPN Software WEP MAC Filtering Unique SSID (If Broadcasting is not disabled) IP Protocol 50,51 UDP port 500 Wireless Access Point Firewall IDS WIDS WIDS
  • 86.