In Mac OS X 10.6.x (Snow Leopard) and later versions, monitor mode is supported 802.11 headers are provided, and non-data frames are captured, only in monitor mode. To capture in monitor mode on an AirPort Extreme device, select a “Link-layer header type” other than “Ethernet” from the Capture -> Options dialog box in Wireshark or by selecting a link-layer header type other than “EN10MB” with the “-y” flag in TShark or from the command line in Wireshark (the available link-layer types are printed if you use the “-L” flag). In Mac OS X 10.5.x (Leopard), monitor mode is supported 802.11 headers are provided, and non-data frames are captured, only in monitor mode. On PowerPC Macs, you will have to enable that device by changing the !APMonitormode property in the /System/Library/Extensions/AppleAirport2.kext/Contents/ist property list file to have the value “true” () and rebooting on Intel Macs, that device is enabled by default. To capture in monitor mode on an AirPort Extreme device named en n, capture on a device named wlt n instead – for example, if your AirPort Extreme device is named en1, capture on wlt1. In Mac OS X 10.4.x (Tiger) (at least in later updates), monitor mode is supported 802.11 headers are provided, and non-data frames are captured, only in monitor mode. In Mac OS X releases prior to 10.4.0 (Panther and earlier), neither monitor mode, nor seeing 802.11 headers when capturing data, nor capturing non-data frames are supported – although promiscuous mode is supported. Create a trace_info.Using Apple’s own AirPort Extreme 802.11 wireless cards:.Use this default for files sent to Bluecoat. By default Wireshark will save the packet trace in lib pcap format. Just click on the File menu option and select Save As. Save the packet trace in any supported format.The Wireshark website has a good FAQ on this subject. It might take a few seconds for Wireshark to display the packets captured. Once the problem which is to be analysed has been reduced, click on Stop.If packets are still not being captured, try removing any filters that have been defined. It will probably be a long alpha-numeric string. Examine the interface list and pick the one that is not associated with the WANIP. The capture dialog should show the number of packets increasing. Now click the Start button to start the capture.Enable transport name resolution: Wireshark will attempt to resolve transport names.Also will attempt to resolve network names for other protocols. Enable network name resolution: Wireshark will issue DNS queries to resolve IP host names.Enable MAC name resolution: Wireshark contains a table to resolve MAC addresses to vendors.Hide capture info dialog: Disable this option so that you can view the count of packets being captured for each protocol.Automatic scrolling in live capture: Wireshark will scroll the window so that the most current packet is displayed.Update list of packets in real time: Disable this option if the problem that's being investigated is occurring on the same workstation as where Wireshark is running.Stop capture after xxx second(s): Bluecoat Technical Support would most likely never use this option.Stop capture after xxx kilobyte(s) captured: Bluecoat Technical Support would most likely never use this option.Stop capture after xxx packet(s) captured: Bluecoat Technical Support would most likely never use this option.The file name should be specified if the ring buffer is to be used. When a file fills up, it will wrap to the next file. Use multiple files, Ring buffer with: These options should be used when Wireshark needs to be left running capturing data for a long period of time.By default Wireshark will use temporary files and memory to capture traffic. Capture file(s): This allows a file to be specified to be used for the packet capture.Filters: Generally, Bluecoat Support prefers an unfiltered trace. Bluecoat Support will always want to see full frames.
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