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Performance Analysis of 802.11 Wireless Network under Beacon Frame Spoofing in OPNET

Performance Analysis of 802.11 Wireless Network under Beacon Frame Spoofing in OPNET. Group members: Ji Xue (xueji0202@gmail.com) Jiawei Wen(jwen01@email.wm.edu) Yu Feng (yufeng@cs.wm.edu) SVN repository: http ://advancednetwork.googlecode.com/svn/trunk/. Background.

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Performance Analysis of 802.11 Wireless Network under Beacon Frame Spoofing in OPNET

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  1. Performance Analysis of 802.11 Wireless Network under Beacon Frame Spoofing in OPNET Group members: JiXue(xueji0202@gmail.com) Jiawei Wen(jwen01@email.wm.edu) Yu Feng(yufeng@cs.wm.edu) SVN repository:http://advancednetwork.googlecode.com/svn/trunk/

  2. Background Wireless LAN (WLAN) Multiple clients are connected to an AP AP is associated with multiple clients AP broadcasts beacon frames to claim its activity CLIENT 1 AP CLIENT 3 CLIENT 2 Figure 1: Infrastructure Basic Service Set (IBSS)

  3. Background(cont.) • The Importance of Beacon Frames IEEE 802.11 claims that “ AP periodically broadcasts beacon frames to maintain the connectivity with clients” If beacon did not arrive timely Clients will disconnect with AP after several beacon frames losses !!!

  4. An open flaw of IEEE 802.11 Periodic beacon sending makes it easy to predict the TX time of beacon frames Jam at the beacon time Other clients will not receive beacon frames, then disconnect from the AP Malicious clients will enjoy the AP source totally!!!

  5. Simulation Tool: OPNET

  6. Simulate an office Wireless LAN Improvements are needed!

  7. Then we defined a periodic jammer….

  8. And the result is…

  9. Here comes the challenge:

  10. Our Expectations Efficiency Circumvent detection

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