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  1. #1

    Failed to set capabilities

    Hi all,

    I'm trying to capture traffic via Wireshark on a host running Ubuntu liveCD. At first, it won't catch any interface to capture on. Gogling I saw this website where they give you instructions to set it up and getting it running (first link when googling "capture priviliges wireshark wiki")

    Everything goes fine until introducing the line:

    "setcap 'CAP_NET_RAW+eip CAP_NET_ADMIN+eip' /usr/bin/dumpcap"

    The terminal gives me the following message:
    Faile to set capabilities on file '/usr/bin/dumpcap' (Operation not supported) usage...
    Note: <filename> must be a regular (non-symlink) file.

    Ok, I tried:
    cd /usr/bin/
    readlink -v dumpcap

    and it says:

    readlink: dumpcap: Invalid argument

    Anyone knows what is happening and how can I get it solved?

    Thanks in advance!

  2. #2
    I think you are not running wireshark as a root user. Try running wireshark by the following command.

    sudo wireshark

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