Wireless Deauthentication Flashcards

1
Q

It started as a normal day

A
  • Surfing along on your wireless network
    • And then you’re not
  • And then it happens again
    • And again
  • You may not be able to stop it
    • There’s (almost) nothing you can do
    • Time to get a long patch cable
  • Wireless deauthentication
    • A significant wireless denial of service (DoS) attack
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2
Q

802.11 management frames

A

• 802.11 wireless includes a number of management
features

  • Frames that make everything work
    • You never see them

• Important for the operation of 802.11 wireless
• How to find access points, manage QoS, associate/
disassociate with an access point, etc.

• Original wireless standards did not add protection for
management frames
• Sent in the clear
• No authentication or validation

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3
Q

Protecting against disassociation

A
  • IEEE has already addressed the problem
    • 802.11w - July 2014

• Some of the important management frames are
encrypted
• Disassociate, deauthenticate, channel switch
announcements, etc.

  • Not everything is encrypted
    • Beacons, probes, authentication, association
    • Cart before the horse
  • 802.11w is required for 802.11ac compliance
    • This will roll out going forward
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