4d 3c b2 a1 if the file was written on a little-endian machine and has nanosecond-resolution time stamps.a1 b2 3c 4d if the file was written on a big-endian machine and has nanosecond-resolution time stamps.d4 c3 b2 a1 if the file was written on a little-endian machine and has microsecond-resolution time stamps.a1 b2 c3 d4 if the file was written on a big-endian machine and has microsecond-resolution time stamps.Both pcap and pcapng files are normally written in the byte order of the host that wrote the file. Part of me is wondering would it be different Big and Little Endian style hardware?
Magic number machine code#
However, I did notice that one of the Solaris (Intel/x86-64) 11.3 VM I just built thinks my capture files are just 'data'.īy which you probably mean that the file command, or some other code using the library that the Ian Darwin file command uses or that uses the same "magic" file, thinks your capture files are just "data".īyte ordering was flip on a pcapng file. Part of me is wondering would it be different Big and Little Endian style hardware? Google says Solaris will be big or little depending on the SPARC versus Intel. This question is more of scratch the itch sort of question and OCD on having the ability to determine what a file is without having access to 'capinfos'. I rather not go the brute force method of running Wireshark and capturing a bunch of files. So what I would like is a good location to find what are the specific magic numbers used in the standard set of files that Wireshark can understand. The capture file was generated in a CENTOS VM hosted on a standard Intel/windows 7 platform. However, when looking at an "od -x " I noticed that the byte ordering was flip on a pcapng file. I took a step back and used capinfos command to determine the file type. However, I did notice that one of the Solaris (Intel/x86-64) 11.3 VM I just built thinks my capture files are just 'data'. I was trying to use the file command on various sets of hardware to fully automate data analysis of network performance on Wireshark capture files on Cygwin, CENTOS, and Solaris. TLR/DNR - use of magic numbers in capture files - what are they
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