AirPcapReplay_user_guide - AirPcapReplay 1. Introduction...

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1 AirPcapReplay 1. Introduction The purpose of this application is to replay 802.11 network traffic, whether it is contained in a trace file or simply a single packet. In addition to the replay feature, AirPcapReplay also allows the user to edit individual packets using a built-in hex editor. 2. Replaying a Trace File When starting the program the contents of the “File Transmit” tab are displayed. This tab contains the interface for replaying an entire trace file. With the list in the “Adapter” section you can select an adapter that is currently present on the system. If only one adapter is plugged in it is chosen by default. When an adapter is chosen, the program shows some details like the supported rates (a, b, g, or n), the ability to transmit and the specific model of AirPcap adapter in use. Once an adapter is selected it's possible to choose a file that is to be replayed by clicking on the “Browse” button. If no adapter is present the application waits for the user to insert one. Adapters that don’t support transmission are listed, but if selected, the user interface will be disabled until an adapter that supports transmission is selected.
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2 When selecting a trace file, the only file extensions that are accepted are “pcap” and “cap.” The application can manage three categories of trace files: simple “802.11”, “Radiotap” and “PPI”. The first kind of file, “802.11”, contains only 802.11 packets with no additional header. The second and the third types of trace files contain packets with the Radiotap or PPI header; these headers store additional information such as the channel the packet was received on and its receive rate. Only files containing the FCS field for each packet are allowed. When a file contains no valid packets or lacks an FCS for each packet an error is shown. In the “File Name” section, just below the trace file path, you can find the link type of the specified file
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3 and its size. Depending on the kind of file selected, some controls on the graphic interface are enabled. In the above example we have an 802.11 trace file. As said before, the “802.11” trace file type does not
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This note was uploaded on 07/15/2009 for the course NA MAT taught by Professor 100 during the Spring '09 term at University of Illinois at Urbana–Champaign.

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AirPcapReplay_user_guide - AirPcapReplay 1. Introduction...

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