When Wireshark starts, the active interface is the default one
(Edit→Preferences→Capture→Default Interface). During Wireshark usage, the active interface is the last one used for packet capture.
Channel offset for AirPcap N | Edit the decryption keys list |
Change the adapter’s | Set the adapter to capture | Change the advanced settings | |
channel while it’s | or drop packets with | ||
of the AirPcap Adapter | |||
capturing | wrong FCS | ||
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Enable/disable WEP decryption in the driver or in Wireshark
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| Figure 6: The Wireshark Wireless Toolbar | |
| The Wireless toolbar has the following controls: | ||
| • | 802.11 Channel: allows the user to change the channel on which | |
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| the current AirPcap adapter captures. The channel can be changed | |
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| at any time, even while Wireshark is capturing. | |
| • | Offset: for AirPcap N, allows the user to set an extension, or | |
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| “wide” channel. | |
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Tip: | When | ||
| (Edit→Preferences→Capture→Update list of packets in real time), | ||
| switching from channel to channel allows you to see which | ||
| channels have traffic and which ones are unused. | ||
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| • | FCS Filter: allows the user to select which packets the current | |
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| AirPcap adapter should capture: all the packets, only packets with | |
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| a valid FCS, or only packets with an invalid FCS. This feature can | |
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| be used to get a quick check on the quality of the transmission on | |
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| the channel and/or the quality of the adapter’s reception. | |
AirPcap User’s Guide | 15 |
