Troubleshoot network issues with iptraf

Introduction

Iptraf is a program you can use to monitor network connections in real time.

Please note that cPanel support cannot assist with troubleshooting, using, or interpreting this command's output. You should consult your System Administrator if you need further assistance with Iptraf.

Procedure

Iptraf can be installed with your operating system's package manager.

CentOS/CloudLinux 6 or 7:

yum -y install iptraf

AlmaLinux, Rocky Linux, and CloudLinux 8+:

dnf install iptraf

Monitor IP traffic on a particular interface

You can type the following to monitor traffic on a particular interface:

iptraf -i $interface

For example, if you want to monitor eth0, you would type the following:

iptraf -i eth0

View detailed information on a particular interface

You can use the "-d" option to view detailed information on a particular interface. 

For example, you can type the following to see a detailed report on the eth0 interface:

iptraf -d eth0