How to monitor network connections on Linux with iftop

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iftop is a very useful command that can help us troubleshoot network issues and show statistics about download speed and network connections

to install it on ubuntu

sudo apt-get -y install iftop

Get a list of network connections and info for download / upload

sudo iftop -n -P -t -s1 -L1000
interface: wlp108s0
IP address is: 192.168.1.168
IPv6 address is: 2a02:587:e3e:d700:cc8a:4e6f:447d:4f4a
MAC address is: 34:e1:2d:55:ea:ec
Listening on wlp108s0
   # Host name (port/service if enabled)            last 2s   last 10s   last 40s cumulative
--------------------------------------------------------------------------------------------
   1 [2a02:587:e3e:d700:cc8a:4e6f:447d::45536 =>     76,4Kb     76,4Kb     76,4Kb     19,1KB
     [2606:4700:30::681b:bb88]:http           <=     4,31Mb     4,31Mb     4,31Mb     1,08MB
--------------------------------------------------------------------------------------------
Total send rate:                                     76,4Kb     76,4Kb     76,4Kb
Total receive rate:                                  4,31Mb     4,31Mb     4,31Mb
Total send and receive rate:                         4,39Mb     4,39Mb     4,39Mb…