How to install and use iftop utility on Linux. This command listens to network traffic on a given interface (such as eth0 or eth1), and shows a table of current bandwidth usage by pairs of hosts.

Login as root, install iftop by the command below:

#yum -y install iftop

How do I use iftop command?

The syntax is:

iftop
iftop [options]
iftop -i interface
iftop -i eth0 -f filter_code

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