Wireshark for linux
By standard installing of wireshark this program is to be launched with root access, otherwise there is no access for capture of network interfaces. For example, the launch of wireshark looks in Ubuntu like this:
sudo wireshark
For launching of wireshark without root access the following operations are to be performed:
sudo apt-get install wireshark sudo dpkg-reconfigure wireshark-common sudo usermod -a -G wireshark $USER sudo reboot