The output size that you choose depends on your application, but if you're trying to split up a very large file for use with Eye P.A., start with a 100mb file, which would be -C 100 in tcpdump. You can now move the files to your Windows machine, Windows partition, or Windows VM for use with Eye P.A. To make the files easier to open in Eye P.A., you might want to rename the output files to include. Run tcpdump -r -w -C, where input_pcap is the name of the fie you want to split, output_pcap is the output, and is the approximate size of the split files in megabytes.įor example: tcpdump -r input_packet_capture.pcap -w output_packet_capture -C 25 will split the file into ~25mb chunks.Ĥ. Navigate to the directory where your PCAP file is stored with the cd command.ģ. It’s often more useful to capture packets using tcpdump rather than wireshark. This solution should work in macOS and most Linux distributions without any additional software.Ģ. : Capturing with tcpdump for viewing with Wireshark. In some cases, it may be necessary to split large PCAP files into smaller pieces for use with Eye P.A., or to make them easier to move around.
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