I've installed Wireshark in Ubuntu 16.04 with the command:

sudo apt-get install wireshark

After program start, Start Capture and Stop Capture buttons are disabled. Even opening Capture Options window, I can't see any interfaces to capture packets from. They don't show even with menu Capture > Refresh Interfaces.

Where are all machine's interfaces?


I also noticed there's a message in the main screen:

Couldn't run /usr/bin/dumpcap in child process: Permission denied

  • You have to run wireshark as root to see all interfaces. Just open terminal and write "sudo wireshark". You will have to enter password. – NonStandardModel Jul 7 '16 at 17:20
  • Can't run it with sudo. The output for sudo wireshark is No protocol specified / QXcbConnection: Could not connect to display :0 / Aborted (core dumped) – Thiago Rider Augusto Jul 7 '16 at 17:27
  • Try following these instructions: sathisharthars.wordpress.com/2014/06/04/… – Alcuin Arundel Jul 7 '16 at 17:38

Even though you could run wireshark as root, it should be avoided.

Instead, try this:

sudo dpkg-reconfigure wireshark-common

Select YES to the question

Then add your user to newly created wireshark group with this

sudo adduser $USER wireshark

Finally log out, and log back in and you should be able to capture packets.

  • I was able to capture packets only if I enabled capture to non-superusers... If I select No to question issued by sudo dpkg-reconfigure wireshark-common, even with my user in wireshark system group, I can see interfaces but can't capture through those. – Thiago Rider Augusto Jul 7 '16 at 17:57
  • 1
    @ThiagoRiderAugusto My bad, I added one step to the answer. Try select YES to the question – jiipeezz Jul 7 '16 at 18:01
  • Selecting YES allows even users not in wireshark group or just added users? – Thiago Rider Augusto Jul 7 '16 at 18:06
  • 1
    Just the user/users added to the group. (somebody correct me if I'm wrong) – jiipeezz Jul 7 '16 at 18:09

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