Network monitoring on Linux

Some packages I found useful for watching network traffic (statistic level and per-domain level)

sudo apt install bmon iftop wireshark-qt

• bmon: gives little ASCII graphs of network activity (for levels too low for the system Network Monitor to show on its axis)
• iftop (call with sudo): logs domains contacted
• wireshark (upon installation will ask if you want to set it to run privileged, if you don't understand then accept its default suggestion)