I am running a network related program that performs TLS handshakes with many hosts. I ant to monitor the network traffic so I used nethogs. It shows 0 KB.
NetHogs version 0.8.5-2
PID USER PROGRAM DEV SENT RECEIVED
? root unknown TCP 0.000 0.000 KB/sec
TOTAL 0.000 0.000 KB/sec
I have previously run this program and nethogs was showing me information about the network traffic. What is the problem? How to see the ongoing/outgoing traffic? Are there alternative tools?
I use Ubuntu 18.04. The command I entered:
sudo nethogs
I also tried with the adapter name that I obtain using ifconfig:
sudo nethogs enx9cebe8b0d86a
vnStat. I've used it for years with great success: https://askubuntu.com/questions/1459/how-can-you-monitor-total-internet-data-usage-across-reboots/846455#846455 – WinEunuuchs2Unix Dec 12 '18 at 02:52