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airpcap_user_guide - Family of Wireless Capture Adapters...

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Family of Wireless Capture Adapters User’s Guide
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Copyrights Copyright © 2006-2009 CACE Technologies, Inc. All rights reserved. This document may not, in whole or part, be: copied; photocopied; reproduced; translated; reduced; or transferred to any electronic medium or machine-readable form without prior consent in writing from CACE Technologies, Inc. AirPcap Family of Wireless Capture Adapters User’s Guide Document Version: 4.0 Document Revision: January 2009 CACE Technologies, Inc. 1949 5th Street, Suite 103 Davis, CA 95616 Tel : 530.758.2790 Fax : 530.758.2781 [email protected] http://www.cacetech.com
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i Contents and Figures Contents The AirPcap Product Family ......................................................................... 3 A Brief Introduction to 802.11 ...................................................................... 4 Terminology ............................................................................................. 4 802.11 Standards ...................................................................................... 4 Channels ................................................................................................... 5 Types of Frames ....................................................................................... 6 How AirPcap Adapters Operate .................................................................... 7 Multiple Channel Capture (applies to USB adapters only) .................... 8 Configuring the Adapters: the AirPcap Control Panel ................................. 9 Identifying the AirPcap Adapters ............................................................ 9 Settings ................................................................................................... 10 WEP Keys .............................................................................................. 11 The Multi-Channel Aggregator (applies to USB AirPcap adapters only) ......................................................................................... 12 AirPcap and Wireshark ............................................................................... 14 Identifying the AirPcap Adapters in Wireshark .................................... 14 The Wireless Toolbar ............................................................................ 14 The Wireless Settings Dialog ................................................................ 16 The Decryption Keys Management Dialog ........................................... 18 The Multi-Channel Aggregator (applies to USB AirPcap adapters only) ......................................................................................... 19 Transmit Raw 802.11 Frames on Your Network ....................................... 20 Where to Learn More .................................................................................. 21 Appendix A: 802.11 Frequencies ............................................................... 22 2.4GHz Band .......................................................................................... 22 5GHz Band ............................................................................................. 22 Channels Supported by the AirPcap Product Family ............................ 22
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ii AirPcap User’s Guide Figures Figure 1: The AirPcap Control Panel. Settings Tab. .................................... 9 Figure 2: AirPcap N and Extension ChannelSetting .................................. 10 Figure 3: The AirPcap Control Panel. Keys Tab. ....................................... 12 Figure 4: Multi-Channel Aggregator .......................................................... 13 Figure 5: The Wireshark Adapters List ...................................................... 14 Figure 6: The Wireshark Wireless Toolbar ................................................ 15 Figure 7: Wireless Settings Dialog in Wireshark ....................................... 17 Figure 8: Decryption Keys Management Dialog in Wireshark ................. 18 Tables Table 1. Feature Comparison for the AirPcap Product Family .................... 3
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